Answers
Answer:
Around 3.57m/s
Explanation:
p=mv
Let's denote the momentum, mass, and velocity of the car with the subscript 1, and for the truck use 2. After the collision, the combined momentum can be denoted with the subscript 3.
\(p_1=1200\cdot 9=10800 \\\\p_2=1600\cdot 13=20800 \\\\20800-10800=10000 \\\\1200kg+1600kg=2800kg \\\\10000=2800v_3 \\\\v_3\approx 3.57m/s\)
Hope this helps!
Related Questions
Tarik winds a small paper tube uniformly with 175 turns
of thin wire to form a solenoid. The tube's diameter is 8.05 mm
and its length is 2.37 cm
. What is the inductance, in microhenrys, of Tarik's solenoid?
Answers
The value of the inductance, in , microhenrys of Tarik's solenoid is approximately 1.6239 microhenrys.
How to solveTo calculate the inductance of a solenoid, we can use the formula:
L = (μ₀ * N² * A) / l
where L is the inductance, μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A), N is the number of turns, A is the cross-sectional area of the solenoid, and l is the length of the solenoid.
In this case, we have:
N = 175 turns
Diameter = 8.05 mm = 0.00805 m (converted to meters)
Radius = Diameter / 2 = 0.00805 m / 2 = 0.004025 m
Length (l) = 2.37 cm = 0.0237 m (converted to meters)
First, let's find the cross-sectional area (A) using the formula for the area of a circle:
A = π * r² = π * (0.004025 m)² ≈ 5.08398 × 10⁻⁵ m²
Now we can plug in the values into the formula for inductance:
L = (4π × 10⁻⁷ T·m/A * (175)² * 5.08398 × 10⁻⁵ m²) / 0.0237 m
L ≈ (1.2566 × 10⁻⁶ * 30625 * 5.08398 × 10⁻⁵) / 0.0237
L ≈ (38.5086 × 10⁻⁶) / 0.0237
L ≈ 1.6239 × 10⁻⁶ H
Now, let's convert the inductance from henrys to microhenrys:
L ≈ 1.6239 × 10⁻⁶ H * 10⁶ μH/H ≈ 1.6239 μH
So the inductance of Tarik's solenoid is approximately 1.6239 microhenrys.
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Which equation shows the correct relationship between mechanical energy, kinetic energy, and potential energy?
ME = KE + PE
O ME + KE = PE
O ME = KE - PE
O ME + PE = KE
Answers
Answer:
ME= KE+PE
Explanation:
just took quiz
The correct relationship between mechanical energy, kinetic energy, and potential energy is ME= KE + PE, the correct option is A.
What is mechanical energy?Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.
The expression for total mechanical energy is as follows
\(ME = KE + PE\)
As total mechanical energy is the sum of all the kinetic as well potential energy stored in the system.
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A mass oscillates on a spring, bouncing up and down 5 times per second. From the highest position to the
lowest position of the mass is a distance of 16 cm.
Answers
Answer:
i kinda dnt knw srry wanted the points for the answer
Explanation:
A 6.30-N force is applied to a 4.5-kg object to accelerate it rightwards. Neglecting any frictional forces, what is the acceleration of the object?
Answers
Answer:
1.4 m/s2
Explanation:
i took the test
Newton’s law of gravitation says that gravity is a mutually attractive force. Explain the following observation: A small object is dropped on Earth and we see it fall toward Earth. However, we do not observe Earth moving toward the object.
Answers
Answer:
Explanation:
The explanation involves another Newton's law: his second law of motion says force is a product of mass and acceleration.
When a small object is dropped on Earth, gravity pulls the object down towards Earth. The same mutually attractive gravity force also pulls Earth towards the object. But as mass of Earth is much larger than that of the small object, the acceleration of Earth and hence its movement toward the object will be much smaller as to be not noticeable.
A framed picture hangs from two cords attached to the ceiling.
A picture of a picture frame hanging by two cables at the center of the frame at the same length and angle from the vertical.
Which shows the correct free body diagram of the hanging picture?
A free body diagram with two force vectors, the first pointing downward labeled F Subscript g Baseline, the second pointing upward labeled F Subscript N Baseline.
A free body diagram with three force vectors, the first pointing south labeled F Subscript p Baseline, the second pointing northeast labeled F Subscript T Baseline, and the third pointing northwest labeled F Subscript N.
A free body diagram with three force vectors, the first pointing south labeled F Subscript g Baseline, the second pointing northeast labeled F Subscript T Baseline and the third pointing northwest labeled F Subscript T.
Answers
Answer:
Answer is C
Explanation:
I just did it E2020
A free body diagram with three force vectors, the first pointing south labeled F Subscript g Baseline, the second pointing northeast labeled F Subscript T Baseline and the third pointing northwest labeled F Subscript T. Thus option C is correct.
What is free body diagram?Free body diagram is defined as a drawing of an interesting object with all of its surroundings removed and the forces at work on the subject's body clearly depicted.
It is also defined as a diagram that reduces the loads and moments acting on a component or system of components.
Free body diagrams are streamlined depictions of an object and the force vectors operating on it in a problem. Since the diagram will depict this body without its surroundings, it is "free" of its environment.
Thus, a free body diagram with three force vectors, the first pointing south labeled F Subscript g Baseline, the second pointing northeast labeled F Subscript T Baseline and the third pointing northwest labeled F Subscript T. Thus option C is correct.
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when material allow to heat to pass though them rapidly they are known as __________
Answers
Answer:
They are conductors/conductive. Materials that can transfer thermal energy well are conductive.
Explanation:
Answer:when material allow to heat to pass though them rapidly they are known as Conductors
What are conductors
In physics /electrical engineering They allow the flow of charge (electrical current) in one or more directions. Materials made of metal are common electrical conductors.
What are examples of conductors
.Silver
.copper
.iron
.aluminum
.brass
Difference between conductors and insulators?
Insulators a material that is a poor conductor (as of electricity or heat)Whereas Conductors are fantastic at allowing the flow of the heat.
Hope this helps
-Tobie
A 12 volt power supply is connected
to two 30 Ohm resistors in parallel.
What is the voltage drop across the
resistors?
12 V
30 Ω
30 Ω
[?] volts
Answers
24 volts is the voltage drop across each of the resistors in the parallel configuration.
When resistors are connected in parallel, they share the same voltage across them. Therefore, the voltage drop across each resistor in this scenario would be the same.
Given:
Power supply voltage (V) = 12 V
Resistance of each resistor (R) = 30 Ω
Since the resistors are in parallel, the total resistance (R_total) can be calculated using the formula:
1/R_total = 1/R1 + 1/R2
Substituting the values:
1/R_total = 1/30 Ω + 1/30 Ω
1/R_total = 2/30 Ω
R_total = 15 Ω
Now, we can find the current flowing through the resistors (I) using Ohm's Law:
I = V / R_total
I = 12 V / 15 Ω
I = 0.8 A
Since the voltage drop across each resistor is the same, we can find it using Ohm's Law:
V_drop = I * R
V_drop = 0.8 A * 30 Ω
V_drop = 24 V
Therefore, the voltage drop across each of the resistors in the parallel configuration is 24 volts.
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What is the universal force that exists between any objects with mass called?
(A) matter
(B) weight
(C) pull
(D) gravity
Answers
Answer:
D- gravity
Explanation:
Answer:
The answer is (D) Gravity.
Explanation:
I received a 100 on my test. Re-viewed and got this correct.
What is the answer please help
Answers
Answer:
I think c
Explanation:
cold air pushes warm air up and then the air mixes(im not sure)
If the angle between two forces increases, the magnitude of their resultant-
A Decreases
C. Remain unchanged
D. Decrease than decreases
Answers
A cheetah can run from 0 to 70 mph in 2.2 seconds. How much distance did the cheetah cover in traveling from 0 to 70 mph?
Answers
The top speed of a cheetah in m/s is 31.29 m/s.
Given data:
The initial speed of a Cheetah is, u = 0 mph.
The final speed of the Cheetah is, v = 70 mph.
The time interval is t = 2.2 seconds.
We are already given with top speed of a Cheetah, and it’s none other than the final speed itself. Now we need to convert the mph value of top speed into m/s value.
We know that,
1 mph = 0.44704 m/s
So, the value of 70 mph in m/s is,
Thus, we can conclude that the top speed of a cheetah in m/s is 31.29 m/s.
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Technician A says that when replacing a rear hatch window with defroster grids, the
wiring connection may have a locking tab that will need to be released before
removal.
Technician B says that when replacing a rear hatch window with hydraulic lift struts,
the struts should be completely compressed before removal.
Who is right?
A only
B only
Both A and B
Neither A nor B
Answers
Technician A only is tight as hen replacing a rear hatch window with defroster grids, the wiring connection may have a locking tab that will need to be released before removal.
Who is a Technician?A technician is someone with expertise and training in a technical procedure. You might need to contact a network technician if your computer network is giving you problems.
A technician is familiar with all of the technical details (ins and outs) of a particular process. A computer technician is an expert in both operating and repairing computers. Similar to a mechanic, an automotive technician is well-versed in cars and how to repair them. Technology and technicians are not always synonymous. A painter or musician may also be referred to as a technician if they have received training in a variety of artistic or musical techniques.
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what statement is true according to newton’s first law of motion?
a. in the absence of unbalanced force an object at rest will stay at rest and an object in motion will come to a stop.
b. in the absence of an unbalanced force, an object will start moving and an object in motion will come to a stop.
c. in the absence of an unbalanced force, an object at rest will stay at rest and an object in motion will stay in motion.
d. in the absence of an unbalanced force, an object will start moving and an object in motion will stay in motion.
Answers
Answer:
c. in the absence of an unbalanced force, an object at rest will stay at rest and an object in motion will stay in motion.
Explanation:
First law: things keep doing what they are doing, unless force is applied.
a)Calculate the angular velocity of the second hand of a clock. State in rad/s.
B)Calculate the angular velocity of the minute hand of a clock. State in rad/s.
c)Calculate the angular velocity of the hour hand of a clock. State in rad/s.
d)What is the angular acceleration in each case?
Answers
The angular velocity of a clocks second hand, its minute hand, and its hour hand are 0.1047rad/s, 1.745 × 10⁻³rad/s and 1.454 × 10⁻⁴rad/s respectively.
Time period for second hand; T = 60s
Time period for minute hand; T = 60s = 60x60s = 3600s
Time period for hour hand; T = 12h = 12x60x60s = 43200s
Now, we use the relation between angular speed and time period:
w = 2x3.14/T
Where ω is the angular velocity and T is the time period in seconds.
For Second hand
w = 2x3.14/60s = 0.1047rad/s
For Minute hand
w = 2x3.14/3600s = 1.745x10-3rad/s
For Hour hand
w = 2x3.14/43200s = 1.454x10-4rad/s
Therefore, the angular velocity of a clocks second hand, its minute hand, and its hour hand are 0.1047rad/s, 1.745 × 10⁻³rad/s and 1.454 × 10⁻⁴rad/s respectively.
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When forces are balanced they?
Answers
Answer:
There is no change in motion it is constant
Explanation:
Balanced forces are equal in size and opposite in direction. When forces are balanced, there is no change in motion. In one of your situations in the last section, you pushed or pulled on an object from opposite directions but with the same force.
What role do planetesimals play in the origin of the planets?
Answers
2. The storage in a river reach at a specified time is 3 hectare-meters. At the same instant, the inflow to the reach is 15 m3/s and the outflow is 20 m3/s. One hour later, the inflow is 20 m3/s and the outflow is 20.5 m3/s. Determine the change in storage in the reach that occurred, during the hour. What is the storage at the end of the hour? (1 hectare = 10000 m2).
Answers
Answer:
The change in storage in the reach that occurred, during the hour = 43200 m3
The storage at the end of the hour = 129600 m3
Explanation:
Given
Storage = 3 hectare-meters
Inflow volume = 15 m3/s
Outflow volume = 20 m3/s
Storage in one hour of change
Inflow volume = 20 m3/s
Outflow volume = 20.5 m3/s
Outflow volume - Inflow volume = 0.5 m3/s = 0.5 * 24*60 * 60 = 43200 m3
Storage at the end of one hour
43200 m3 + (20-15) * 24*60 * 60 = 129600 m3
Choose all true statements Choose all true statements Resistors connected in parallel will always have the same potential difference across all of them. When combining multiple resistors in series, the equivalent resistance is less than any of the individual resistanes. Resistors connected in series will always have the same current flowing through all of them. Resistors connected in series will always have the same potential difference across all of them. Resistors connected in parallel will always have the same current flowing through all of them. When combining multiple resistors in parallel, the equivalent resistance is less than any of the individual resistanes.
Answers
Answer:
The answer is " Option F, Option C, and Option D".
Explanation:
In the question the three choices were correct which can be defined as follows:
Its equivalent resistance is below any load resistors while integrating multiple resistors in parallel.The connected sequence resistances will still have the same fluid power.Simultaneously connected resistances will always have the same electrical potential between them at all.
The trunk of a elephant may extend up to 2.2 m. It acts much like an organ pipe only open at one end when the elephant blows air through it. 1) Calculate the fundamental frequency of the sound the elephant can create with its trunk.2) If the elephant blows even harder, the next harmonic may be sounded. What is the frequency of the first overtone?
Answers
Answer:
1) f = 38.63 Hz , 2) f = 115.9 Hz
Explanation:
The elephant's trunk can be approximated by a tube with a closed end, in pipes the closed ends correspond to nodes and the open ends to antinodes or bellies.
The expression for the wavelengths of this system is
4L = n λ
n = 1, 3, 5, 7 ...
also let's use the relationship between frequency and wavelength and wave speed
v = λ f
f = v / λ
f = v n / 4L
f = v / 4L n
1) the fundamental frequency occurs for n = 1
f = 340/4 2.2 1
f = 38.63 Hz
2) The first harmonic
n = 3
f = 340/4 2.2 3
f = 115.9 Hz
Does bacteria Use energy
Answers
Answer:
Bacteria can obtain energy and nutrients by performing photosynthesis, decomposing dead organisms and wastes, or breaking down chemical compounds. Bacteria can obtain energy and nutrients by establishing close relationships with other organisms, including mutualistic and parasitic relationships.
Explanation:
State Lenz’s Law and give an example of how it is used
Answers
According to Lenz's law
It can be written mathematically as
\(e=-N\frac{d\Phi}{dt}\)Here, e is the emf.
N is the number of loops.
The derivative is the change in magnetic flux with respect to time.
The negative sign indicates the opposing nature.
Lenz's law is used in Ac generators, eddy current, microphones, and so on.
In an AC generator, the direction of current in the coil changes due to a change in the magnetic field.
Suppose we have to calculate emf in the coil,
if the number of turns in the coil is 1 i.e. N = 1.
The change in magnetic flux be - 3 x 10^(-3) Wb
The change in time will be dt = 0.04 s
The emf can be calculated as
\(\begin{gathered} e=-N\frac{d\Phi}{dt} \\ =-1\frac{(-3\times10^{-3})}{0.04} \\ =0.075\text{ V} \end{gathered}\)In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in which the player strikes a ball with his pool cue).
The top of a pool table is a height ℎ=2.75 ft from the floor. If a player's ball lands a distance =16.50 ft from the table edge, what is her break shot speed 0?
Answers
The break shot speed of the player is determined as 96.5 ft/s.
Time of motion of the playeruse the following kinematic equation to determine the time of motion of the player.
h = vt + ¹/₂gt²
h = 0 + ¹/₂gt²
h = ¹/₂gt²
t = √(2h/g)
t = √(2 x 2.75/32.17)
t = 0.171 s
break shot speedvx = x/t
vx = 16.5 ft / 0.171 s
vx = 96.5 ft/s
Thus, the break shot speed of the player is determined as 96.5 ft/s.
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How can a hockey puck explain the transfer of kinetic energy? **Select all that apply.**
A. Kinetic energy transfers through air when materials are close.
B. Kinetic energy is lost when it transfers between materials.
C. Energy transfers from materials through touch.
D. Kinetic energy can move from one item to another.
Answers
A car is parked along a level road
Answers
Answer:
okay did you park it LOL
Explanation:
How long will it take a person walking at 3.2 m/s to travel 16 m? *
Answers
Answer:
5.0 s
Explanation:
The equation for time is:
\(t = \frac{d}{s} \)
We plug in the given values into the equation
\(t=\frac{16\ m}{3.2\ m/s^}\)
\(t=5.0 \ s\)
waves in a pond or lake are
Answers
Difference between Weightlessness in space and weightlessness during free fall.
Answers
Weightlessness in space and weightlessness during free fall may appear similar in terms of the sensation experienced, but they occur under different circumstances and have distinct underlying causes. Here are the key differences between the two:
1.Environment:
Space: Weightlessness in space refers to the state experienced by astronauts in orbit around the Earth or in deep space. They are in a microgravity environment, far away from any significant gravitational forces.
Free fall: Weightlessness during free fall occurs when an object is falling under the influence of gravity, experiencing zero-gravity conditions momentarily. This typically happens when an object is in a state of free fall, such as during skydiving or in an airplane during a parabolic flight.
2.Gravitational Forces:
Space: In space, weightlessness is the result of being in constant free fall around the Earth. Although gravity is still present, the gravitational forces are counterbalanced by the centrifugal force created by the orbiting motion. This results in a continuous state of free fall, giving the sensation of weightlessness.
Free fall: Weightlessness during free fall occurs due to the absence of support forces countering the force of gravity. When an object is in free fall, there are no contact forces pushing against it, leading to a sense of weightlessness.
3.Duration:
Space: Weightlessness in space can last for an extended period, as long as the object or person remains in orbit or deep space. Astronauts aboard the International Space Station (ISS), for example, experience weightlessness for months at a time.
Free fall: Weightlessness during free fall is relatively brief and temporary. It occurs during the duration of the free fall, which can last for a few seconds to a couple of minutes, depending on the specific circumstances.
4.Context:
Space: Weightlessness in space is a constant state for astronauts. They adapt to this environment and conduct various experiments, work on scientific research, and live aboard the spacecraft for extended periods.
Free fall: Weightlessness during free fall is typically experienced as part of a recreational activity or a specific scientific experiment. It is a brief moment of weightlessness within the context of a larger activity, such as skydiving, parabolic flights, or drop towers.
While both weightlessness in space and weightlessness during free fall share the absence of apparent gravity and the sensation of floating, they occur in different environments, are caused by different factors, and have varying durations and contexts.
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Two objects are sitting 150 meters apart and are not moving. Which best explains why the gravitational force does not cause them to move?
Answers
In the above pic question is similar like that only
Answer:
The gravitational force between the two objects is weak because their masses are small
Type your answer in the box.
An organ is a group of two or more
function.
that work together to perform a common function