Answers
Answer:
9000Ns
Explanation:
Given parameters:
Mass of sled = 100kg
Net force = 150N
Time = 1min = 60s
Unknown:
Total impulse = ?
Solution:
The total impulse on the body can be derived using the expression below;
Impulse = Force x time
So;
Impulse = 150 x 60 = 9000Ns
Related Questions
3) A 6.1 kg bowling bowl and a 7.2 kg bowling ball rest on a rack. If the force of gravity pulling each
bowling ball toward the other is 3.1 X 10° N, what is the separation between the balls?
Answers
The distance of separation of the balls is 3.07×10⁻⁵ m.
To Solve the question, we use the formula below.
Formula:
F = GMm/r²...................... Equation 1Where:
F = Force of gravityG = Universal constantM = mass of the bigger bowling ballm = mass of the smaller bowling ballr = Distance of separation between the balls.
Make r the subject of the equation,
r = √(GMm/F)................. Equation 2From the question,
Given:
F = 3.1 NM = 7.2 kgm = 6.1 kgG = Constant = 6.67×10⁻¹¹ Nm²/kg².Substitute these values into equation 2
r = √(7.2×6.1×6.67×10⁻¹¹/3.1)r = √(9.45×10⁻¹⁰)r = 3.07×10⁻⁵ mHence, the distance of separation of the balls is 3.07×10⁻⁵ m.
Learn more about gravitation force here: https://brainly.com/question/2537310
If energy cannot be created or destroyed, where does it go?
Answers
Answer:
it transfers from one place to another.
Explanation:
let's take our example as money:
Money is neither created nor destroyed but it is transferred.
PLS HELP ME ASAPPPP. 50 POINTSSS
What is the amount of energy needed to raise the temperature of a mercury in glass thermometer of mass
300g though 10 OC, given that the mass of the mercury is 60g?
Given that the specific heat capacity of mercury is130 J/kg K.
Answers
Answer:
1.8 kj
Explanation:
Explanation:
A substance's specific heat tells you how much heat is required to increase the mass of
1 g
of that substance by
1
∘
C
.
The equation that establishes a rel;ationship between heat absorbed and change in temperature looks like this
q
=
m
⋅
c
⋅
Δ
T
, where
q
- heat absorbed
m
- the mass of the sample
c
- the specific heat of the substance
Δ
T
- the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample
You have all the information needed to find the amount of heat required to increase the temperature of your sample of mercury by that many degrees Celsius, so just rearange the above equation and solve for
q
q
=
250.0
g
⋅
0.14
J
g
∘
C
⋅
(
62
−
10
)
∘
C
=
1820 J
I'll leave the answer rounded to two sig figs and expressed in kilojoules
q
=
1.8 kJ
Answer Explanation:
A substance's specific heat tells you how much heat is required to increase the mass of
1 g
of that substance by
1
∘
C
.
The equation that establishes a rel;ationship between heat absorbed and change in temperature looks like this
q
=
m
⋅
c
⋅
Δ
T
, where
q
- heat absorbed
m
- the mass of the sample
c
- the specific heat of the substance
Δ
T
- the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample
You have all the information needed to find the amount of heat required to increase the temperature of your sample of mercury by that many degrees Celsius, so just rearange the above equation and solve for
q
q
=
250.0
g
⋅
0.14
J
g
∘
C
⋅
(
62
−
10
)
∘
C
=
1820 J
I'll leave the answer rounded to two sig figs and expressed in kilojoules
q
=
1.8 kJ
Answer link
Answer:
1.8 kj
Explanation:
which object has the most kinetic energy a truck going 100 miles per hour or a motorcycle going 100 miles per hour
Answers
Answer:
The truck
Explanation:
Kinetic energy is directly proportional to mass. Since the truck has more mass, it will have more energy.
3.) A bicyclist of a mass of 40kg is riding through the streets of LA with a kinetic energy of 300
J. The bicyclist gets hit by a car and flings into the air and hits a building. How high did the bicyclist
travel in the air before hitting the building? Hint : KE = PE
Answers
The bicyclist traveled 10 meters in the air before hitting the building
We can get the above answers by following the steps below
Firstly we have to assume there are no external forces acting on the cyclist other than gravity.
When the bicyclist is about to hit the building, all kinetic energy will be converted into potential energy because of the height at which the cyclist is.
Therefore, we can equate the initial kinetic energy of the bicyclist to the potential energy at the highest point of their trajectory
Given
KE = PE
1/2 *m*v² = m*g*h
where m is the mass of the bicyclist (40 kg), v is their initial velocity before being hit, g is the acceleration due to gravity, and h is the height
Since we need to find h, we should isolate it by. Since the initial velocity isn't directly mentioned,we can assume the value to be 13.9
h = (1/2 * v²)/g
h = (1/2 * 13.9²)/9.81
h ≈ 10 meters
Therefore, the bicyclist traveled approximately 10 meters into the air before hitting the building.
To learn more about potential and kinetic energy,
https://brainly.com/question/25959744
https://brainly.com/question/25996974
A horizontal pipe of diameter D = 3.0 cm passes through a reservoir dam at depth d = 5.0 m. A plug secures the pipe opening. The water density is p = 1.0 x103 kg/m3. (a) Find the magnitude of the frictional force between the plug and pipe wall. (b) If the plug is removed, what water volume exits the pipe in 1.0 minute? Ignore water viscosity. (c) If the pipe is h = 10.0 m above the ground, how far will the water travel horizontally from the pipe exit when hitting the ground? Ignore air friction.
Answers
Given data
*The given horizontal piper of diameter is D = 3.0 cm = 0.03 m
*The given depth is d = 5.0 m
*The given water desnsity is
\(p=1.0\times10^3kg/m^3\)(a)
The magnitude of the frictional force between the plug and pipe wall is given as
\(\begin{gathered} F=\text{pgd}\times A \\ =\text{pgd}\times\pi r^2 \end{gathered}\)*Here r = d/2 is the radius
Substitute the values in the above expression as
\(\begin{gathered} F=(1.0\times10^3)(9.8)(5.0)\times3.14\times(\frac{0.03}{2})^2 \\ =34.61\text{ N} \end{gathered}\)(b)
The volume flow rate is calculated as
\(\begin{gathered} V=Av \\ =\pi r^2\sqrt[]{2gd} \\ =3.14\times(\frac{0.03}{2})^2\times\sqrt[]{2\times9.8\times5.0} \\ =6.99\times10^{-3} \end{gathered}\)The total volume is calculated as
\(\begin{gathered} V_{T_{}}=V\times t \\ =6.99\times10^{-3}\times1.0\times60 \\ =0.4194m^3 \end{gathered}\)Identify the scenario, where the crash sensor of a car can possibly send signals to inflate the airbag in automobiles.
Answers
When a car is stopped abruptly by an impact, the airbags are inflated.
An airbag is an inflatable safety device designed to protect the occupants of a car in case of a collision. The airbags are part of an occupant restraint system and are also referred to as air cushion restraint system. Airbags supplement the basic protection offered by seat belts.
When a car is stopped abruptly by an impact, all bodies or objects that are not firmly fixed to the car will continue to move at the impact speed. The sensors measure this acceleration and relay it to the control unit as usable data.
To know more about the airbags, here
brainly.com/question/29869944
#SPJ4
Wondering if you have enough rope to rappel to the ground, you drop a rock off the top, and hear the sound of it hitting the bottom 4.2 seconds later. Find the height of the cliff ignoring the time that the sound takes to travel back to you from the bottom.
Answers
Answer:
86.5 m
Explanation:
\(s = ut + \frac{1}{2} at {}^{2} \\ s = (0)(4.2) + \frac{1}{2} (9.81)(4.2) {}^{2} \\ s = 86.5m \)
Answer:
86.5 m
Explanation:
Find the average force the cylinder exerts on the nail while pushing it into the block. Ignore the effects of the air. Express your answer with the appropriate units. A nail is partially inserted into a block of wood, with a length of 0.0300 m protruding above the top of the block. To hammer the nail in the rest of the way, you drop a 20.0 kg metal cylinder onto it. The cylinder rides on vertical tracks that exert an upward friction force of 16.0 N on the cylinder as it falls. You release the cylinder from rest at a height of 1.50 m above the top of the nail. The cylinder comes to rest on top of the block of wood, with the nail fully inside the block. Use the work-energy theorem to find the speed of the cylinder just as it hits the nail
Express your answer with the appropriate units.
Answers
The average force the cylinder exerts on the nail while pushing it into the block is 196.6 N, expressed in the appropriate units.
To find the average force the cylinder exerts on the nail while pushing it into the block, we need to use the work-energy theorem. The theorem states that the net work done on an object is equal to its change in kinetic energy.
In this case, we can assume that all of the gravitational potential energy of the cylinder is converted into kinetic energy just before it hits the nail.
The initial potential energy of the cylinder is given by mgh, where m is the mass of the cylinder, g is the acceleration due to gravity, and h is the height from which the cylinder is dropped. Substituting the given values, we get:
Initial potential energy =\((20.0 )(9.81 )(1.50 ) = 294.3\)
The final kinetic energy of the cylinder just before it hits the nail is given by\((1/2)mv^2\), where v is the speed of the cylinder. We can solve for v by equating the initial potential energy to the final kinetic energy:
\(294.3 J = (1/2)(20.0 )v^2\)
\(v = \sqrt{2 * 294.3 J} ) / (20.0 kg)) = 3.42 m/s\)
Now, to find the average force exerted by the cylinder on the nail, we need to use the impulse-momentum theorem. This states that the impulse (change in momentum) of an object is equal to the force applied to it multiplied by the time during which the force is applied.
Since the cylinder comes to rest immediately after hitting the nail, we can assume that the time during which the force is applied is very short. Therefore, we can approximate the average force as the peak force, which is equal to the momentum change of the cylinder divided by the time it takes to stop.
The momentum of the cylinder just before it hits the nail is given by p = mv, where m is the mass of the cylinder and v is the speed we just calculated. Substituting the given values, we get:
p = (20.0 kg)(3.42 m/s) = 68.4 kg m/s
The momentum of the cylinder just after it hits the nail is zero, since it comes to rest. Therefore, the momentum change is simply equal to the initial momentum. To find the time it takes for the cylinder to stop, we need to use the kinematic equation v = at, where a is the acceleration of the cylinder while it is in contact with the nail, and t is the time during which the force is applied.
\(3.42 m/s = (9.81 m/s^2)t\)
t = 0.348 s
Now we can calculate the average force:
Average force = peak force = momentum change / time = 68.4 kg m/s / 0.348 s = 196.6 N
Therefore, the average force the cylinder exerts on the nail while pushing it into the block is 196.6 N, expressed in the appropriate units.
For more such questions on force visit:
https://brainly.com/question/12970081
#SPJ11
another student also expected 2.63 g of product, but isolated only 2.45 g. what is the percentage yield? show your work.
Answers
The percentage yield is a measure of how efficiently a chemical reaction produces the expected product. In this case, the expected product was 2.63 g, but only 2.45 g was isolated. To calculate the percentage yield, you need to divide the actual yield (2.45 g) by the theoretical yield (2.63 g), and then multiply by 100 to convert to a percentage.
The equation for percentage yield is:
% Yield = (actual yield / theoretical yield) x 100
In this case, the calculation would be:
% Yield = (2.45 g / 2.63 g) x 100 = 93.14%
Therefore, the percentage yield is 93.14%. This means that only 93.14% of the expected product was obtained in the reaction. The remaining 6.86% was lost due to various factors such as incomplete reaction, loss during transfer or filtration, or errors in measurement.
In conclusion, calculating the percentage yield is an important step in assessing the efficiency of a chemical reaction. It helps to identify the factors that affect the yield and optimize the conditions to maximize the product output.
to know more about chemical reaction click this link
brainly.com/question/22817140
#SPJ11
an airplane accelerates at a constant speed at 30m/s2
Answers
Now that s=u*t+at2 is being used, s =0*+302 equals 300 m. For instance, if the plane was travelling at 300 m/s2, its final velocity before it took off was 30 m/s2.
What does the term mean when an aeroplane is travelling at a fixed speed?If there isn't a net force exerted on the item that would cause it to accelerate, there is constant velocity. Drag and thrust are the two primary forces affecting the forward motion of an aeroplane.
when a plane is travelling at a constant speed on a level, straight path?The lift and push produced by an aeroplane while it is travelling level and straight at a steady velocity balance its weight and drag, respectively. Yet, as the aircraft climbs and descends, speeds up or slows down, and turns, the balance of forces varies.
To know more about velocity visit:
https://brainly.com/question/17127206
#SPJ1
a boy looks at the reflection of his digital watch in a plane mirror and thinks the time is 10:11. what is the correct time?
Answers
Answer:
11:10 will be the time. reflection causes the object to be flipped when you see its image at the mirror
Quickly...
A/An _____ is described as a type of circuit in which there are several current paths.
Options:
parallel circuit
series circuit
short circuit
voltage divider
Answers
A parallel circuit is described as a type of circuit in which there are several current paths.
A parallel circuit is a type of electrical circuit where two or more components are connected in parallel, and each component has its path for electric current flow. The path is separate from all other parts, and each has the same voltage level. The current divides among each path according to the resistance value of the components in the circuit. Parallel circuits are used in various applications, including lighting in households, street lights, and other electronic devices. In a parallel circuit, the voltage across each component is the same, and the total current in the circuit is equal to the sum of the current flowing in each branch.
A parallel circuit is used in the household and other applications to prevent other electrical devices from overloading and cutting off electrical supply, for example, when several devices are plugged into a power source. In a parallel circuit, the voltage divider circuit can be used to divide the voltage among resistors. This is because the voltage across each component in a parallel circuit is the same, and we can use the equation V = IR to calculate the voltage divider.
for such more questions on circuit
https://brainly.com/question/2969220
#SPJ8
what is the acceleration of a softball if it has a mass of 0.50kg and hits the catcher’s glove with a force of 25 N
Answers
Answer:
mass=0.50kg
force=25N
acceleration =?
Now,
force=m×a
25=0.50×a
25÷0.50=a
50=a
acceleration =50m/s^2 answer!!!!
hope this may help you!!!!
Answer:
The answer is 50 m/s squared.
Explanation:
A=M/F
A= 25 Newtons
------------------ (DIVIDED BY)
0.5 Kilograms
A= 50 m/s squared
A block of mass 0.244 kg is placed on top of a light, vertical spring of force constant 4 975 N/m and pushed downward so that the spring is compressed by 0.097 m. After the block is released from rest, it travels upward and then leaves the spring. To what maximum height above the point of release does it rise
Answers
As the spring returns to it's equilibrium position, it performs
1/2 (4975 N/m) (0.097 m)² ≈ 23 J
while the gravitational force (opposing the block's upward motion) performs
-(0.244 kg) g (0.097 m) ≈ -2.3 J
of work on the block. By the work energy theorem, the total work done on the block is equal to the change in its kinetic energy:
23 J - 2.3 J = 1/2 (0.244 kg) v² - 0
where v is the speed of the block at the moment it returns to the equilibrium position. Solve for v :
v² = (23 J - 2.3 J) / (1/2 (0.244 kg))
v = √((23 J - 2.3 J) / (1/2 (0.244 kg)))
v ≈ 44 m/s
After leaving the spring, block is in free fall, and at its maximum height h it has zero vertical velocity.
0² - (44 m/s)² = 2 (-g) h
Solve for h :
h = (44 m/s)² / (2g)
h ≈ 2.3 m
What is happening when an oxygen molecule is formed from two separate oxygen atoms?
Answers
Two from each oxygen atom. For examples of covalent bonding are water (H2O), and carbon dioxide (CO2). Covalent compounds are mostly gases or liquids with low melting points.
Timed!! please help i would really appreciate it! i will try to give brainliest!
Craig rides a skateboard on the sidewalk in front of the mall, traveling at 18km/h. How much time would it take him to travel 6.0km?
Answers
Answer:
20 minutes
Explanation:
.....
.........
Which of these pulses is least likely to produce an axial resolution artifact ?
a. 10 Mhz, 8 mm beam diameter, 6 cycles per pulse
b. 4 Mhz, 4 mm beam diameter, 2 cycles per pulse
c. 9 Mhz, 8 mm beam diameter, 2 cycles per pulse
d. 6 Mhz, 2 mm beam diameter, 2 cycles per pulse
Answers
Option b (4 Mhz, 4 mm beam diameter, 2 cycles per pulse) is least likely to produce an axial resolution artifact.
This is because it has a lower frequency and fewer cycles per pulse, which result in better axial resolution and reduced chances of artifacts. The pulse that is least likely to produce an axial resolution artifact is d. 6 Mhz, 2 mm beam diameter, 2 cycles per pulse. This is because the higher frequency (Mhz) and shorter pulse duration (2 mm beam diameter, 2 cycles per pulse) provide better axial resolution, meaning that the sound waves can distinguish between closely spaced objects along the direction of the beam. Artifacts can occur when sound waves encounter tissue boundaries or other structures that reflect or scatter the waves in unexpected ways, leading to distortion or interference patterns in the resulting image. A narrower beam diameter and shorter pulse duration can help to minimize these effects.
Learn more about pulse here: https://brainly.com/question/21918102
#SPJ11
Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1.00 W/m2. (a) If a radar unit leaks 50.0 W of microwaves (other than those sent by its antenna) uniformly in all directions, how far away (in cm) must you be to be exposed to an intensity considered to be safe
Answers
Answer:
The safe distance is 199 cm approximately 200 cm
Explanation:
Safe intensity = 1.00 W/m^2
wattage of radar leaked radar = 50.0 W
safe distance from the microwave will be = ?
We know that the intensity of a wave radiated uniformly in all direction is given as
\(I\) = \(\frac{W}{A}\)
where
W is the wattage of the leaked radar
A is the radial area, which is the area of a sphere that encapsulates the region through which this wave spreads uniformly.
From the equation above,
\(A\) = \(\frac{W}{I}\) = 50/1 = 50 m^2
But the area of this sphere \(A\) = \(4\pi r^{2}\)
where
r is the safe distance from the radar source
substituting for the area, we have
50 = 4 x 3.142 x \(r^{2}\)
50 = 12.568 \(r^{2}\)
\(r^{2}\) = 50/12.568 = 3.978
r = \(\sqrt{3.978}\) = 1.99 m = 199 cm ≅ 200 cm
Please! I cant fail this! Im literally freaking out.....
Answers
Answer:
Conduction
Explanation:
The heat causes molecules in the pan to vibrate faster, making it hotter
find the velocity of a baseball thrown across a field a distance of 40 meters it takes the ball 4 seconds to cross the field
Answers
The velocity of a baseball thrown across a field is (V)= 10m/s
What is Velocity?Velocity of a particle is its speed and the direction in which it is moving.
It can also be described as the instantaneous rate of change of the particle's distance traveled.
How can we calculate the values of the velocity?To calculate the velocity we are using the formula here,
V= S/t
Here we are given,
S= a distance of a baseball thrown= 40m
t= time to travel the distance = 4 seconds.
Now we put the values in the above equation, we get
V= S/t
Or, V = 40/4
Or, V= 10m/s
So, from the above calculation we can conclude that, the velocity of a baseball thrown across a field is (V)= 10m/s
Learn more about Velocity:
https://brainly.com/question/25749514
#SPJ9
Examine the equation.
-2(-x + 9) = 2(x - 9)
2x - 18 = 2x - 18
This equatior has
Answers
Answer:
same value because both sides are equal
Explanation:
equal value
True or False
1. Scientists have complete knowledge of atoms and this knowledge can never change?
Answers
When a solid goes directly to a gas, which process amongst the following processes best describe the phase change?
(a) Sublimation
(b) Vaporization
(c) Condensation
(d) Deposition
(e) Melting
Answers
The correct option is A. Sublimation process amongst the When a solid goes directly to a gas.
Sublimation refers to the process of transforming a substance from its solid state directly into its gaseous state without passing through the intermediate liquid state. This occurs when the pressure of the substance's vapor is higher than the pressure of the surrounding atmosphere.
Sublimation is a physical phenomenon that occurs naturally in a number of substances, such as dry ice (solid carbon dioxide), mothballs (solid naphthalene), and snow (solid water). It is also used in various industrial processes, such as freeze-drying, where substances are dried by freezing them and then removing the ice through sublimation.
In psychology, sublimation refers to the redirection of an individual's impulses or desires into socially acceptable outlets, such as artistic or creative pursuits, instead of expressing them in destructive or harmful ways. Sigmund Freud, the founder of psychoanalysis, believed that sublimation was a healthy and adaptive defense mechanism.
To learn more about Sublimation visit here:
brainly.com/question/29304516
#SPJ4
It is estimated that a driver takes, on average, 1.5 seconds from seeing on obstacle to react by applying the brakes to stop or swerving. How far will a car, moving at 26 miles per hour in a residential neighborhood, travel (in feet) before a driver reacts to an obtacle? (round distance to one decimal place) feet
Answers
Answer:
The car was 132 feet far before the driver reacts to an obstacle.
Step-by-step explanation:
Given,
The speed of car = 60 miles per hour,
Also, time taken by the car to reacting the
obstacle =1.5 seconds = 3600 = 2100 hours
(1 hour = 3600 seconds )
We know that,
Distance = Speed × Time,
Hence, the distance of car from the obstacle before reacting the obstacle
= 60 × 2100
60
2400
# miles
Since, 1 mile = 5280 feet
= # miles = $280 = 132 feet
Therefore, the car would 132 feet far from the obstacle.
What value of resistor R gives the circuit in the figure a time constant of 22 μs ?
Answers
The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.
The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:
RC = τ, where R is the resistance and C is the capacitance of the circuit.
Rearranging the above formula, we get:R = τ / C
Where τ is the time constant and C is the capacitance of the circuit.
From the figure, the capacitance is given as 0.1 μF
.Substituting the values of τ and C in the above formula, we get:
R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)
R = 220 Ω
Learn more about resistance at
https://brainly.com/question/31504283
#SPJ11
How far has a dolphin traveled in kilometers if it swims for 1.8 h at 5.6 km/h ?
Answers
Answer:
distance = 6.26342 miles
Explanation:
The current in a light bulb is 2 A. How long does it take for a total charge of 4 C to pass a point in the wire
Answers
Answer:
2min
Explanation:
i think it will be clear from photo
Answer: The formula for current is charge/time
so here we have to change subject so we are asked to look for time
Explanation: so it would be T=Q/I
T=4/2
T=2s
hope this helpss
A football is kicked with a speed of 18 m/s at an angle of 65° to the horizontal. How far does the football travel horizontally before it hits the ground?
Answers
The horizontal distance traveled by the football is determined as 25.33 m.
Horizontal distance traveled by the football
The horizontal distance traveled by the football is calculated as follows;
X = u²sin(2θ)/g
where;
u is the initial speedg is acceleration due to gravityX = (18² x sin(2 x 65))/9.8
X = 25.33 m
Thus, the horizontal distance traveled by the football is determined as 25.33 m.
Learn more about horizontal distance here: https://brainly.com/question/24784992
#SPJ1
If a proton is moved from point 1 to point 2, how will the potential energy of the charge-field system change? how will the potential change?
Answers
The potential energy of the charge-field system change is decreases
As a proton is a positively charged particle, it experiences the force against the electric field, directed from point 2 to 1 , which is constant, given by,
F = e×E, right to left. When a proton is moved in such a way from point 1 to point 2, work done is against the force & the potential energy increases U = F×d = e×E×d.
But an electron is negatively charged, with the same value, so that force experienced is along the field. Thus work is done by the field itself & potential energy decreases. It is similar to a body which falls under gravity.
Hence the option decreases/ decreases is correct.
To learn more about potential energy refer the link:
https://brainly.com/question/15764612
#SPJ4