Answers
Distance = (speed) x (time)
Distance = (70 mi/hr) x (0.5 hr)
Distance = 35 miles
Related Questions
An airbys A380 airliner lands at 30 m/s. Partially loaded, its mass is 480000 kg. The engines apply reverse thrust for 12s to slow the plane to 25 m/s.How much thrust did the engines apply?
Answers
To determine the thrust applied by the engines, we can use Newton's second law of motion, which states that force (thrust) is equal to mass times acceleration. In this case, we need to calculate the force required to decelerate the plane from 30 m/s to 25 m/s in 12 seconds.
First, we calculate the change in velocity (∆v):
\(\displaystyle\sf \Delta v=25\,m/s-30\,m/s=-5\,m/s\)
Next, we calculate the acceleration (∆a) using the formula:
\(\displaystyle\sf \Delta a=\frac{\Delta v}{\Delta t}\)
where ∆t is the change in time, which is 12 seconds in this case.
\(\displaystyle\sf \Delta a=\frac{-5\,m/s}{12\,s}\)
Now, we can determine the force (thrust) applied by the engines using Newton's second law:
\(\displaystyle\sf F=m\cdot a\)
where m is the mass of the airplane, which is 480000 kg.
\(\displaystyle\sf F=480000\,kg\cdot \left(\frac{-5\,m/s}{12\,s}\right)\)
Calculating the result:
\(\displaystyle\sf F=-200000\,N\)
Therefore, the engines applied a thrust of -200000 Newtons (N) to decelerate the plane. The negative sign indicates that the thrust is in the opposite direction of the motion.
You threw a baseball, which is 3 kg, with a total force of 240 N. What is
the acceleration of the baseball?
Answers
Answer:
The answer is 80 m/s
Explanation:
You divide 240 by 3 since your force is 240N, then 3 is your mass, so divide and get 80
Replace the incandescent bulb with the Voltage meter and return loop # to 3. What happens when you move the bar magnet back-n-forth through the loop? Does this appear to be creating a Direct Current or an Alternating Current? How do you know?
Answers
If we replace the incandescent bulb with a voltage meter and return the loop to its original configuration, then moving the bar magnet back and forth through the loop will induce an electrical current in the loop, as described by Faraday's law of electromagnetic induction.
What is magnet?A magnet is a material or object that produces a magnetic field, which is a force that can attract or repel certain other materials, such as iron or steel. The magnetic field is created by the motion of electric charges within the magnet, which align in such a way that they produce a net magnetic field. Magnets can be made from a variety of materials, including iron, cobalt, nickel, and certain alloys. They come in many different shapes and sizes, including bars, discs, horseshoes, and rings.
Here,
The type of current that is generated depends on the direction and rate of the magnet's motion. If the magnet is moved back and forth with a constant speed and in a straight line, the current induced in the loop will be an alternating current (AC), because the direction of the current will reverse every time the magnet changes direction. This can be observed by the voltage meter reading a voltage that periodically changes in direction.
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A 3.0 kg block is pushed 1.0 m at a constant
velocity up a vertical wall by a constant force
applied at an angle of 26.0
◦ with the horizontal, as shown in the figure.
The acceleration of gravity is 9.81 m/s
2
Drawing not to scale.
If the coefficient of kinetic friction between
the block and the wall is 0.20, find
a) the work done by the force on the block.
Answer in units of J.
b) the work done by gravity on the block.
Answer in units of J.
c) the magnitude of the normal force between
the block and the wall.
Answer in units of N.
Answers
(a) The work done by the applied force is 32.6 J.
(b) The work done by gravity on the block is 29.4 J.
(c) The magnitude of the normal force is 29.4 N.
What is the force applied to the block?The force applied to the block is determined by applying the formula for the net force on the block.
F(net) = 0
Fcosθ - mg - Fsinθμ = 0
Fcosθ - Fsinθμ = mg
F(cosθ - sinθμ) = mg
F = (mg) / (cosθ - sinθμ)
F = (3 x 9.8) / (cos26 - 0.2 x sin26)
F = 36.25 N
The work done by the applied force is calculated as;
W = Fd cosθ
W = (36.25 x 1) x cos(26)
W = 32.6 J
The work done by gravity on the block is calculated as follows;
W = mgd
W = 3 x 9.8 x 1
W = 29.4 J
The magnitude of the normal force is calculated as follows;
N = mg
N = 3 x 9.8
N = 29.4 N
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Which of the following locations will be relatively warmer during summers, and why? A. An inland location, because water heats up faster than land.
B. A coastal location, because water heats up faster than land.
C. A coastal location, because water has higher specific heat than land.
D. An inland location, because land has lower specific heat than water.
Answers
Explanation:
The specific heat is a measure of how much heat must be supplied to warm up a substance by a certain number of degrees.
Water has a much higher specific heat than land, so it takes much more heat energy to heat up a given mass of water compared to the land.
To say it another way, the specific heat of land is much less than that of water, so it doesn't take as much heat energy to warm up the land.
Thus, an inland location will be relatively warmer during summers.
Does gravity increase or decrease with greater distance?
Answers
Assume you are a trainer at a local gym. There is evidence that intense or exhaustive physical exercise can increase the production of free radicals. Antioxidants can be used to combat the damage caused by free radicals. One of your competitive athletes has heard bits and pieces of this information and asks you more about it. How would you counsel him?
Use language that the average person will understand, respond to this athlete and be sure to include the following information as a part of your response:
What is meant by oxidation and why can it be damaging to cells?What are free radicals?Why do we produce free radicals if they can damage my body?What are antioxidants? How do antioxidants combat free radicals?What foods are high in antioxidants?Should your friend buy an antioxidant supplement?
Answers
Free radicals are molecules that have an unpaired electron. They can damage cells and tissues by stealing electrons from other molecules in the body, which can lead to a chain reaction of damage.
While it's true that free radicals can damage our bodies, they are also produced as a natural byproduct of our body's normal metabolic processes. In fact, exercise is just one of the many ways that our bodies produce free radicals.
Antioxidants are molecules that can neutralize free radicals by donating an electron to them, without becoming unstable themselves. This can help to prevent the chain reaction of damage that free radicals can cause.
There are many foods that are high in antioxidants, including fruits and vegetables such as blueberries, strawberries, spinach, and kale. Other sources of antioxidants include nuts, seeds, and whole grains.
While it's always a good idea to get your nutrients from whole foods, there are also many antioxidant supplements available on the market. However, research has shown that these supplements may not be as effective as getting antioxidants from whole foods. In fact, some studies have even suggested that high-dose antioxidant supplements could be harmfulin some cases.
My advice would be to focus on getting your antioxidants from whole foods, rather than supplements. By eating a balanced diet that includes plenty of fruits, vegetables, nuts, seeds, and whole grains, you can help to combat the damage caused by free radicals and support your overall health. Additionally, it's important to remember that exercise is still an important part of a healthy lifestyle, and the benefits of exercise far outweigh the potential risks of free radical damage.
Nerve impulses travel at different speeds, depending on the type of fiber through which they move. The impulses for touch travel at 76.2 {\rm m/s}, while those registering pain move at 0.610 {\rm m/s}. Assume that person's brain is 1.81 m from his toe and that the impulses travel directly from toe to brain.1. If a person stubs his toe, find the time for the impulse for touch to reach his brain.t=___s2. If a person stubs his toe, find the time for the impulse for pain to reach his brain.t=___s3. Find the time delay between the pain and touch impulses.{\Delta t} =____s
Answers
Answer:
a
\(t_t = 0.024 \ sec\)
b
\(t_p = 2.93 \ sec\)
c
\(\Delta t = 2.91 \ sec\)
Explanation:
From the question we are told that
The speed of touch impulse is \(v_t = 76.2 m/s\)
The speed of registering pain is \(v_p = 0.610 \ m/s\)
The distance of brain from toe is \(d = 1.81 \ m\)
The time for the touch to reach the brain is
\(t_t = \frac{d }{v_t}\)
substituting values
\(t_t = \frac{1.81 }{76.2}\)
\(t_t = 0.024 \ sec\)
The time for the pain to reach the brain is
\(t_p = \frac{d }{v_p}\)
substituting values
\(t_p = \frac{1.81 }{0.610}\)
\(t_p = 2.93 \ sec\)
The time delay between touch and pain is mathematically evaluated as
\(\Delta t = t_p - t_t\)
substituting values
\(\Delta t = 2.93 - 0.024\)
\(\Delta t = 2.91 \ sec\)
Asteroid X orbits moon XYZ with a speed of 500m/s and a centripetal force of 1500N. Asteroid X, Y and Z all have the same mass. If asteroid Y orbits moon XYZ with the same orbital radius as asteroid X but at a speed of 100m/s. What is the centripetal force acting acting on asteroid Y? If asteroid Z orbits moon XYZ with a speed of 1500m/s but on orbital radius that is half of asteroid X, what is the centripetal force acting asteroid Z?
Answers
Answer this question
Explanation:
Question 1
A) What happens when new evidence is found that contradicts part of a theory?(1 point)
The theory is discarded for a new one.
New pieces are added to the original ideas.
It gets ignored to maintain the original idea.
Science reevaluates the validity of the theory.
Question 2
A) How does a hypothesis differ from a scientific theory?(1 point)
Hypotheses can change with new evidence, but theories remain constant.
Theories always lead to the development of new scientific ideas.
Hypotheses are testable, while theories only exist conditionally.
Theories are well established with lots of evidence to support their claims.
Question 3
A) How is a hypothesis similar to theory?(1 point)
Both a hypothesis and a theory need evidence to support them.
Both a hypothesis and a theory are accepted as true statements.
Both a hypothesis and a theory are statements supported by data.
Both a hypothesis and a theory explain why things happen.
Answers
Science reevaluates a theory when new evidence is found that contradicts it and lots of evidence to support its claims, while hypothesis and theory need evidence to support them.
What is a theory?A scientific theory is a well-sustained body of evidence that is supported by many predictive outcomes.
Conversely, a hypothesis is a plausible explanation that needs to be tested by using the scientific method.
In conclusion, science reevaluates a theory when new evidence is found that contradicts it (question 1) and lots of evidence to support its claims (question 2), hypothesis and theory need evidence to support them (question 3).
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Answer:
To sum up the confusion its
1) D) Science Reevaluates the validity of the theory
2) D) Theories are well established with lots of evidence to support their claims.
3) A) Both a hypothesis and a theory need evidence to support them.
Explanation:
I took the test and it's what the last guy tried to say even if it was all jumbled up...
use chebyshev to estimate the number of coin flips you need to take to be 95% sure you know which coin was chosen.
Answers
We may calculate the proportion of data values that are 1.5 standard deviations or more from the mean using Chebyshev's rule in statistics. Alternately, we can calculate the proportion of data values that deviate by 2.5 standard deviations from the mean.
What does a 75% Chebyshev interval mean?
Therefore, Chebyshev's Theorem informs you that at least 75% of the values lie within the range of 100 20, or 80 to 120. In contrast, no more than 25% of cases fall outside of that range. 1.41 standard deviations is an intriguing range.
What does the Chebyshev inequality tell us?
According to Chebyshev's inequality, 75% of values are found within two standard deviations of the mean, and 88.9% are found within three standard deviations of the mean. It is true for.
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A heat engine receives heat of 400kW from a heat source of 1100 K, and rejects the waste heat into a heat sink at 320K. It generates 120 kW of power output. Determine the 2nd law thermal efficiency of the heat engine.
Answers
Answer:
Explanation:
efficiency of carnot engine operating between 1100 K and 320 K
= 1100 - 320 / 1100
= .709
efficiency of heat engine = 120 / 400 = .30
2 nd law thermal efficiency of heat engine = .30 x 100 / .709
= 42.31 % .
The lower the temperature of the solvent, the faster the solute will dissolve. True False
Answers
Answer:
false.
Explanation:
Since temperature and kinetic energy of molecules are proportional, the more we increase the temperature of the solvent, the faster the solute will dissolve.
This increase of kinetic energy allows the solvent molecules to more effective break apart the solvent molecules that are held together by intermolecular forces.
If we increase the resistance in an RL circuit, what happens to the time required for the current to reach, say, 50% of its final value after the battery is connected?
Answers
Answer:
t = 0.69R/L
If the resistance R increases, the required time decreases, for the battery reaches a 50% of its initial value.
Explanation:
In order to know what happens to the the time, when the battery reaches a 50% of its initial voltage, while the RL resistance increases, you use the following formula:
\(V=V_oe^{-\frac{R}{L}t}\) (1)
Vo: initial voltage in the battery
V: final voltage in the battery = 0.5Vo
R: resistance of the RL circuit
L: inductance of the RL circuit
You use properties of logarithms to solve the equation (1) for t:
\(0.5V_o=V_oe^{-\frac{R}{L}t}\\\\ln(0.5)=-\frac{R}{L}t\\\\t=-\frac{L}{R}ln(0.5)=0.69\frac{L}{R}\) (2)
By the result obtained in the equation (2), you can observe that if the resistance R increases, the required time decreases, for the battery reaches a 50% of its initial value.
.
A 2155 kg demolition ball swings at the end of a 17.5m cable on the arc of a vertical
circle. At the lowest point of the swing, the ball is moving at 8.6m/s. Determine the
tension in the cable at the lowest point. (Hint: T-mg =mv^2/r)
Answers
Answer:
Thread tension:
T = F + P = 9 108 + 21 120 ≈ 30 230 N
Explanation:
Given:
m = 2155 kg
R = 17.5 m
V = 8.6 m/s
g = 9.8 m/s²
_______________
T - ?
Modulus of centripetal force (force is directed towards the center of the circular arc):
\(F = \frac{m\cdot V^2}{R} = \frac{2155\cdot 8.6^2}{17.5} = 9108 N\)
Ball weight (directed vertically down):
W = m·g = 2155·9.8 ≈ 21 120 N
Let's use the hint. Thread tension:
T = F + W = 9 108 + 21 120 ≈ 30 230 N
The tension in the cable at the lowest point of the swing is \(30248.196 N\).
To determine the tension in the cable at the lowest point of the swing, we can use the hint provided:
\(T-mg=\frac{mv^{2}}{r}\)
where T represents tension,
m is the mass of the demolition ball (2155 kg),
g is the acceleration due to gravity (approximately 9.8 m/s^2),
v is the velocity of the ball (8.6 m/s), and
r is the radius of the circular path (17.5 m).
Plugging in the given values, we have:
\(T-2155\times 9.81=\frac{2155\times 8.6^{2}}{17.5}\)
\(T=30248.196 N\)
Therefore, the tension in the cable at the lowest point of the swing is approximately \(30248.196 N\).
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Describe how to demonstrate the thermal energy is dissipated from a cup of hot tea
Answers
Answer:
Explanation:
1. Place a cup of hot tea on a flat surface.
2. Place a thermometer in the tea and record the temperature.
3. Place a fan in front of the cup of tea and turn it on.
4. Place the thermometer in the tea again and record the temperature.
5. Compare the two temperatures and observe the difference.
6. The difference in temperature is an indication of the thermal energy that has been dissipated from the cup of hot tea.
can anyone heelp me plz plz
Answers
Answer:
the ans is D.... good luck
Two cars are headed in the same direction on the HWY. The trailing car is moving at14.5 m/s and has a mass of 1,381 kg. The lead car is moving at 13.4 m/s and has a massof 1,381 kg. The trailing car runs into the lead car and bumps it. Afterwards, the trailingcar has a velocity of 13.4 m/s.To determine if the collision is elastic, calculateAKE=KE - KE
Answers
The initial momentum of the system is,
\(p_i=m_1u_1+m_2u_2\)The final momentum of the system is,
\(p_f=m_1v_1+m_2v_2\)According to conservation of momentum,
\(p_i=p_f\)Plug in the known expressions,
\(\begin{gathered} m_1u_1+m_2u_2=m_1v_1+m_2v_2 \\ m_2v_2=m_1u_1+m_2u_2-m_1v_1 \\ v_2=\frac{m_1u_1+m_2u_2-m_1v_1}{m_2} \end{gathered}\)Substitute the known values,
\(\begin{gathered} v_2=\frac{(1381\text{ kg)(14.5 m/s)+(1381 kg)(13.4 m/s)-}(1381\text{ kg)(13.4 m/s)}}{1381\text{ kg}} \\ =\frac{(1381\text{ kg)(14.5 m/s)}}{1381\text{ kg}} \\ =14.5\text{ m/s} \end{gathered}\)The initial kinetic energy of the system is,
\(K=\frac{1}{2}m_1u^2_1+\frac{1}{2}m_2u^2_2\)The final kinetic energy of the system is,
\(K^{\prime}=\frac{1}{2}m_1v^2_1+\frac{1}{2}m_2v^2_2\)The change in kinetic energy of the system is,
\(\Delta K=K^{\prime}-K\)Plug in the known expressions,
\(\begin{gathered} \Delta K=\frac{1}{2}m_2v^2_2+\frac{1}{2}m_1v^2_1-(\frac{1}{2}m_2u^2_2+\frac{1}{2}m_1u^2_1) \\ =\frac{1}{2}m_2(v^2_2-u^2_2)+\frac{1}{2}m_1(v^2_1-u^2_1) \end{gathered}\)Substitute the known values,
\(\begin{gathered} \Delta K=\frac{1}{2}(1381kg)((14.5m/s)^2-(13.4m/s)^2)- \\ \frac{1}{2}(1381kg)((13.4m/s)^2-(14.5m/s)^2) \\ =(690.5\text{ kg)(}210.25m^2s^{-2}-179.56\text{ }m^2s^{-2})-(690.5\text{ kg)(}179.56\text{ }m^2s^{-2}-210.25\text{ }m^2s^{-2}) \\ =(690.5\text{ kg)(}30.69\text{ }m^2s^{-2})(\frac{1\text{ J}}{1\text{ kg}m^2s^{-2}})-(690.5\text{ kg)(-30.69 }m^2s^{-2}) \\ =21191.4\text{ J+21191.4 J} \\ =42382.8\text{ J} \end{gathered}\)Therefore, the change in kinetic energy of the system is 42382.8 J.
Cual es l diferencia entre ruido y sonido
Answers
Answer:
E.l soni.do es un.a sensac.ión, en el órg.ano del oído, prod.ucida por el movimie/nto ondu>latorio de un m/edio elástico (normal/mente el aire), debi.do a ra.pidísimos ca/mbios de pre.sión, generado/s por el movimiento vibrat.orio d.e un cuerpo sonoro. ... /El ruido se consid/era a to/do sonid.o / o no de.seado.
Explanation:
74Be decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down onto the Earth's surface.
If a plant leaf is detected to have 350 decays/s of 74Be, how long do we have to wait for the decay rate to drop to 25 per second?
Answers
Answer:
201.8 days
Explanation:
The activity of a radioactive sample as a function of times is :
\($R=R_0e^{\frac{0.693t}{T_{1/2}}}$\)
Here, \($R_0$\) = the initial activity
\($T_{1/2}$\) = half life
t = elapsed time
Now rearranging the equation for time, t, we get:
\($\frac{R}{R_0}=e^{-\frac{0.693t}{T_{1/2}}}$\)
\($\ln\left(\frac{R}{R_0}\right)=-\frac{0.693t}{T_{1/2}}$\)
\($t=\frac{-\ln\left(\frac{R}{R_0}\right)T_{1/2}}{0.693}$\)
\($t=\frac{-\ln\left(\frac{25}{350}\right)\times 53}{0.693}$\)
= 201.8 days
Therefore, the required time is 201.8 days
HI PLEASE HELP ON QUESTION ASAP USING AVERAGE (MEAN) TO ANSWER QUESTION! IF UR ANSWER AND EXPLAINATION IS CORRECT ILL RATE YOU FIVE STARS, A THANKS AND MAYBE EVEN BRAINLIEST. PLEASE MAKE SURE YOU ANSWER MY QUESTION USING AVERAGES.
1) a meal for 6 cost £12 per person. as it is one of the diners birthday , the other 5 decided to pay for his meal. how much do each of the five friends need to pay?
Answers
Each of the five friends needs to pay £12 to cover the cost of their own meals and contribute towards the birthday person's meal. Using mean allows us to distribute the cost equally among the friends, ensuring a fair division of expenses for the meal.
To determine how much each of the five friends needs to pay, we can use the concept of averages (mean) and divide the total cost by the number of people paying.
In this scenario, the total cost of the meal for 6 people is £12 per person. Since the other 5 friends have decided to pay for the birthday person's meal, they will collectively cover the cost of their own meals plus the birthday person's meal.
To calculate the total cost covered by the five friends, we can subtract the cost of one person's meal (since the birthday person's meal is being paid by the group) from the total cost. The cost of one person's meal is £12.
Total cost covered by the five friends = Total cost - Cost of one person's meal
= (£12 x 6) - £12
= £72 - £12
= £60
Now, to find out how much each of the five friends needs to pay, we divide the total cost covered by the five friends (£60) by the number of friends (5).
Amount each friend needs to pay = Total cost covered by the five friends / Number of friends
= £60 / 5
= £12
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What is conserved in physical changes?
O shape
O energy
O mass
Odensity
Answers
Airport security uses electromagnetic waves to see items inside of luggage without having to open the bags. Which type of electromagnetic waves would be best for airport security to use?
Group of answer choices
X-rays would be best because they are low-energy waves that can penetrate gases.
X-rays would be best because they are high-energy waves that can penetrate solids.
Radar waves would be best because they are high-energy waves that can penetrate solids.
Radar waves would be best because they are low-energy waves that can penetrate gases.
Some frequencies of ultraviolet light have enough energy to kill bacteria and viruses, but do not have enough energy to penetrate or damage human tissue. For which one of the following medical applications would this type of electromagnetic radiation be most useful?
Group of answer choices
to restructure a tooth
to disinfect surgical rooms
to correct errors in vision
to target and kill cancer cells
Mica is investigating the speed of waves. She hypothesizes that waves travel at different speeds depending on the media. She sets up an experiment where she sends two different waves through air, water, and glass. She keeps the temperature of each medium constant and measures the speed of the waves as they travel through each medium. The data table shows her results.
Wave Air Water Glass
1 299,700 (km/s) 225,260 (km/s) 200,000 (km/s)
2 .331 (km/s) 1.482 (km/s) 5.640 (km/s)
Which types of waves is Mica most likely studying?
Group of answer choices
Both waves are sound waves.
Wave 1 is a light wave, and wave 2 is a sound wave.
Both waves are light waves.
Wave 1 is a sound wave, and wave 2 is a light wave.
Which question BEST determines if a wave is an electromagnetic or a mechanical wave?
Group of answer choices
Does the wave have a crest?
Does the wave transport matter?
Does the wave transport energy?
Does the wave require a medium?
Radar allows pilots to see through clouds, rain, darkness, and fog. It can detect objects so a pilot can avoid hitting them. Radar is also used by the police to detect the speeds of cars on the highway. Radar uses radio waves. Explain why gamma rays are not used for radar instead of radio waves.
Group of answer choices
Gamma ray are only in outer space.
Gamma rays are slower than radio waves so would not work for police radar speed detectors.
Gamma rays do not have enough energy to see through the clouds.
Gamma rays have more energy than radio waves and could harm people
Answers
X-rays would be best because they are high-energy waves that can penetrate solids.
What are electromagnetic waves?In physics, electromagnetic radiation consists of waves of the electromagnetic field, which propagate through space and carry momentum and electromagnetic radiant energy. It includes radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma raysGiven is that Airport security uses electromagnetic waves to see items inside of luggage without having to open the bags.
An X-ray, or, much less commonly, X-radiation, is a penetrating form of high-energy electromagnetic radiation.Most X-rays have a wavelength ranging from 10 picometers to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz and energies in the range 145 eV to 124 keV.Therefore, X-rays would be best because they are high-energy waves that can penetrate solids.
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Larry the Rock was lonely for multiple years. The inertia that Larry possessed intimated those who walked past by it, therefore people never moved Larry.
Larry constantly watched people and cars accelerate past him but sadly he has never had the opportunity to experience acceleration.
But one day, David decides to let Larry experience acceleration and tried to push him. His friend Pancho heard about this and decided to help out. But
because Pancho was not listening in Physics class, he was pushing Larry from the opposite side of David with an equal amount of force and Larry was sad
he still did not get to move.
What type of Equilibrium is Larry going through?
O Static Equilibrium
O Kinetic Equilibrium
O Dynamic Equilibrium
O Geo Equilibrium
O Francesca Equilibrium
Answers
First option is correct.Larry the Rock is going through Static Equilibrium.
In this situation, Larry is at rest and remains stationary despite the forces acting on him. While David and Pancho are exerting equal forces from opposite sides, their forces cancel each other out, resulting in a net force of zero. As a result, Larry does not move or experience any acceleration.
Static equilibrium occurs when an object's forces and torques balance each other, leading to a stable, balanced state. In this case, the forces exerted by David and Pancho are equal in magnitude and opposite in direction, creating a condition where the resultant force is zero. As a result, Larry remains in a state of rest, unable to experience any movement or acceleration.Therefore, the type of equilibrium that Larry the Rock is going through is Static Equilibrium.
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please help im failing!!!
Answers
2- Speed
3- Speed, Mass
4- Mass, More
5- Transferred, collide
6- Kinetic, electricity
7- Transferred, Destroyed
:)
A squirrel drops an acorn onto the head of an unsuspecting dog. The acorn falls 4.0 meters before it lands on the dog. We can ignore air resistance.
How many seconds did the acorn fall?
Answers
Answer:
66
Explanation:
A tadpole swims across a pond at 8.50 cm/s. The tail of the tadpole exerts a force of 28.0 mN to overcome drag forces exerted on the tadpole by the water.
What is the power output?
Can someone explain me, please!
Answers
Answer:
2.38 mW
Explanation:
Power is work per unit time. Work is the product of force and distance. That means ...
\(\text{power}=\dfrac{\text{force}\times\text{distance}}{\text{time}}=\text{force}\times\dfrac{\text{distance}}{\text{time}}\\\\\text{power}=\text{force}\times\text{velocity}\)
Using the given values of force and velocity, the tadpole's power output is ...
P = (0.028 N)(0.085 m/s) = 0.00238 W = 2.38 mW
The tadpole's power output is about 2.38 mW.
the mass of the velociraptor and cage together is 175 kg. What is the gravitational potential energy added when when the velociraptor and cage is lifted from the ground to a height of 9 m?
Answers
The gravitational potential energy added when the velociraptor and cage is lifted from the ground to a height of 9 m is approximately 15,998.95 joules.
What is Potential Energy?
Potential energy is a form of energy that is stored in an object due to its position or configuration in a system. It is the energy that an object has the potential to possess, or the ability to do work, as a result of its position or state.
The gravitational potential energy (GPE) added when the velociraptor and cage is lifted from the ground to a height of 9 m can be calculated using the formula:
GPE = mgh
Where m is the mass of the velociraptor and cage, g is the acceleration due to gravity (approximately 9.81 m/\(s^{2}\)), and h is the height lifted.
Given that the mass of the velociraptor and cage together is 175 kg, and the height lifted is 9 m, we can substitute these values into the formula:
GPE = mgh
GPE = (175 kg) x (9.81 m/\(s^{2}\)) x (9 m)
GPE = 15,998.95 J (joules)
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A set of data was collected measuring the length of a sheet of steel using three different instruments. The actual length of the sheet is 2.00 m. Which instrument is the most accurate in its measurements
Answers
Accuracy of measurement is the degree of how close the measurement is, to the actual measurement.
For a measurement of 2.00 m, 1.99 m is more accurate because it is closer to 2.00 m than 1.95 m.
The set of data is not given. So, I will give a general explanation.
For a measurement to be the accurate, the measurement must be close to the actual measurement, and in some cases, the measurement should be approximated to the actual measurement.
Given that:
\(Length =2.00m\)
An example of an accurate measurement is:
\(Length =1.95m\)
Why? The reasons are
1.95 m is close to 2.00 m1.95 m is approximately 2.00 mAnother example is:
\(Length = 1.99m\)
1.99 m is also an accurate measurement because of the reasons above.
However, 1.99 m is more accurate because it is closer to 2.00 m than 1.95 m
Read more about accuracy of measurements at:
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A ball rolls from x = -9.8 m to x = 11.0 m in 5.0 seconds what was its average velocity
Answers
Explanation:
avg velocity = total displacement / total time taken = (11 - (-9.8)) / 5.0 = 4.16m/s to the right when taken right to be positive