3. A school bus traveling at 22 m/s has a momentum of 150,000 kgm/s. What is the mass of the
bus? *

Answers

Answer 1

Answer:

Mass of bus = 6,818.18 kg (Approx.)

Explanation:

Given:

Velocity = 22 m/s

Momentum = 150,000 kg-m/s

Find:

Mass of bus

Computation:

Mass =  Momentum / Velocity

Mass of bus = 150,000 / 22

Mass of bus = 6,818.18 kg (Approx.)


Related Questions

A 0.10 kg stone is thrown from the edge of an ocean cliff with an initial speed
of 20 m/s. When it strikes the water below, it is traveling at 45 m/s. What is the
change in the kinetic energy of the stone?

Answers

Answer:

79.20 joule

Explanation:

1.

A 0.10kg stone is thrown from the edge of an ocean cliff with an initial speed of 21m/s. When it strikes the water below, it is traveling at 45m/s. What is the change in kinetic energy of the stone?

ΔEk = m/2*(V2^2-V1^2) = 0.05*(45^2-21^2) = 79.20 joule

The change in the kinetic energy of the stone is 81.25 J.

The given parameters;

mass of the stone, m = 0.1 kginitial speed of stone, u = 20 m/sfinal velocity of the stone, v = 45 m/s

The initial kinetic energy of the stone is calculated as follows;

K.E = ¹/₂mu²

K.E₁ = ¹/₂ x 0.1 x 20²

K.E₁ = 20 J

The final kinetic energy of the stone is calculated as follows;

K.E₂ = ¹/₂ x 0.1 x 45²

K.E₂ = 101.25 J

The change in the kinetic energy of the stone is calculated as follows;

ΔK.E = K.E₂ - K.E₁

ΔK.E = 101.25 J  -  20 J

ΔK.E = 81.25 J

Thus, the change in the kinetic energy of the stone is 81.25 J.

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Charges may be transferred by:

A) induction
B) insulation
C) reduction
D) conduction

Answers

A) induction and D) conduction

Answer:

D) conduction

Explanation:

Which circuit would have the most electrical power? ​

Answers

Answer:

c

Explanation:

How do I solve for the maximum height of someone who jumps straight up leaving the ground at 6.0 m/s.

Answers

Answer: 3.0 m/s

Explanation:

Objects 1 and 2 attract each other with a electrostatic force of 36.0 units. If the charge of Object 1 is doubled, then the new electrostatic force will be units.​

Answers

If the charge on the object is doubled then the new electrostatic force is 72 units.

What does the term "electrostatic force" mean?

Non-contact forces, such as electrostatic forces, pull or push on objects without actually making contact with them. When certain materials are rubbed together, a phenomenon known as "charge" can be transferred from one surface to another. Uncharged items are pulled by charged objects, which in turn may push or pull against other charged ones.

Let q and Q represent the charges on objects 1 and 2, respectively.

Charge Q is separated from charge q by a distance r, and their electrostatic attraction is given by:

F = kqQ/r²

where k is Coulomb's constant

According to the question:

F = 36 units

⇒  kqQ/r² = 36 units

Now, the charge on object 2 is doubled, so it now acquires a 2Q charge.

So the new electrostatic force will be:

F' = kq(2Q)/r²

F' = 2kqQ/r²

F' = 2F = 2×36

F' = 72 units

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Question 17 of 25
Which term describes the transfer of energy from a hot object to a cooler
one?

A. Pressure

B. Density

C. Temperature

D. Heat

Answers

Answer:

D

Explanation:

heat is an energy that transfers from a hot body to cold body

D. Heat

What is heat?

Heat is the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.

Such energy transfer can occur in three ways: radiation, conduction, and convection.

As heat is a form of energy, and therefore the SI unit of heat is also joules (J) which are defined as the amount of energy needed to raise the temperature of a given mass by one degree.

Heat is the transfer of energy from a warmer object to a cooler object.

For example, a lighted match (higher temperature object) will transfer heat to a large pan filled with lukewarm water (lower temperature object).

Therefore,

The term describes the transfer of energy from a hot object to a cooler one is Heat.

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20. If 4 X 1016 J of energy is released in a nuclear
reaction. Calculate the mass defect, Am (2 mark)
(A) 0.22kg (B) 0.44kg (C) 0.66kg (D) 0.88kg​

Answers

I found this formula in an old book.

E = m · c²

It may be useful.

c = 3 x 10⁸ m/s

c²  = 9 x 10¹⁶ m²/s²

4 x 10¹⁶ J = m · (9 x 10¹⁶ m²/s² )

m = (4 x 10¹⁶ J) / (9 x 10¹⁶ m²/s²)

m  =  0.44 kg (choice-B)  

What are the key features of stem cell therapy? ​

Answers

Answer:

The two defining characteristics of a stem cell are perpetual self-renewal and the ability to differentiate into a specialized adult cell type.

Answer:

Stem cells have the ability to differentiate into specific cell types. The two defining characteristics of a stem cell are perpetual self-renewal and the ability to differentiate into a specialized adult cell type.

What is the potential energy of a 12 kg box on a 5 m high shelf?

Answers

Answer:6

Explanation:$’n

there is a metal ball and ring set that is specially made so that at room temperature at the ball fits through the ring However when the ball is heated it gets stuck and cannot fit through anymore .why​

Answers

Answer: Most objects expand when they take in heat for example get a metal sphere and put it next to a blow torch it would expand just enough to not fit in the ring anymore, but when it cools down it will go back to its original size releasing the energy

Explanation:

In a
boundary, the more dense
plate will move below the less dense plate
when the plates collide.
A. transform
B. divergent
C. convergent

Answers

C, would be the correct answer

5. In an open system, for maximum work, the process must be entirely
a) irreversible
b) reversible
c) adiabatic
d) none of the mentioned
7. Which of the following is true for a closed system?
a) mass entering = mass leaving
b) mass does not enter or leave the system
c) mass entering can be more or less than the mass leaving
d) none of the mentioned
13. A piston cylinder contains 0.5 kg of air at 500 kPa and 500 K. The air expands in a
process so pressure is linearly decreasing with volume to a final state of 100 kPa and 300
K. Find the work in the process.
a) 56.1 kJ
b) 66.1 kJ
c) 76.1 kJ
d) 86.1 kJ
5- И
Land 279 At this state the

Answers

The answer is B. Reversible
B b b b b b b b b b b

Physics Help ASAP Please!

Answers

Answer:

23N

Explanation:

Answer:

9.3N

Explanation:

Fgrav = m • g = 14.7 N (g is 9.8 m/s/s)

a = v2 / R = (4 • Fgrav)/1 = 16 m/s/s

Fnet = m • a = 1.5 kg •16 m/s/s = 24 N, down

Fnet = Fgrav + Ftens, so

Ftens = Fnet - Fgrav

Ftens = 24 N - 14.7 N = 9.3 N

How do you calculate the average velocity of mercury as it orbits the sun?

Answers

Answer:Hope this helps!!!!!

Explanation:

People are fascinated with high-speed travel. A Boeing 747 flies at about 550 miles per hour. The Concorde Supersonic Transport flew over twice as fast at about 1350 miles per hour. That is impressively fast, but consider the speeds that we passengers on planet Earth always travel. The circumference of the Earth at the equator is 24900 miles and the residents of the tropic areas travel that distance every 24 hours. They are traveling over a thousand miles an hour. At 38° latitude we are traveling about 820 miles per hour. That is quite impressive but it pales in comparison with the orbital speed of the Earth, The average distance of the Earth from sun is 93.5 million miles. This means that in 365.25 days the Earth travels 587.5 million miles. This works out to about 67 thousand miles per hour. This is the speed we travel 24 hours a day, 365.25 days a year.

The orbital velocity is 2πR/T where R is the average radius of the orbit and T is the length of the year. The orbital velocity of a planet relative to that of Earth's is then the relative radius divided by the relative length of the year.

A car has 3600 J of kinetic energy and is going 3 m/sec. What is its mass?

Answers

800kg
m=2KE/v^2
m=2*3600/3*3
m=7200/9
m=800kg

What is the purpose of the antireflective coating on the glass layer of a solar
cell?
A. It keeps the solar cell from overheating.
B. It increases the charges on the semiconductors.
C. It provides better contact between the terminals.
D. It allows more solar energy to be absorbed.

Answers

The purpose of the antireflective coating on the glass layer of a solar

the cell is that It allows more solar energy to be absorbed, therefore the correct answer is option D.

What is solar energy?

The energy emitted by the Sun as a form of thermal electromagnetic radiation is known as solar energy.

This solar energy is produced by nuclear fusion in the center of the Sun. Solar energy is a form of renewable source of energy.

As given in the problem statement we have to find out the best statement from the given options which describes the purpose of the antireflective coating on the glass layer of a solar cell.

In order to increase the amount of solar energy that can be absorbed, a solar cell's glass layer has an anti-reflective coating, therefore the correct answer is option D.

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Answer:

D

Explanation:

16. An object with a mass of 20.0 kg has a force of 5.0 newtons applied to it. What is the resulting acceleration of the object?

Answers

Answer:

0.25m/s^2

Explanation:

F = ma

a = F/m

(Newton's Second Law)

Two 8.0 Ω lightbulbs are connected in a 12 V parallel circuit. What is the power of both glowing bulbs?

Answers

Answer:

96w

Explanation:

p=Iv..where v=12 and I=8.0

5. A runner of mass 60 kg accelerates at 2.0 m/s2 at the start of a
race. Calculate the force provided from her legs.​

Answers

Answer:

F = 120 N

Explanation:

Given that,

The mass of a runner, m = 60 kg

Acceleration of the runner, a = 2 m/s²

We need to find the force provided from her legs. The formula for force is given by :

F = ma

Substitute all the values,

F = 60 kg × 2 m/s²

= 120 N

So, the required force is equal to 120 N.

The provided force will be "120 N".

Given:

Mass,

m = 60 kg

Acceleration,

a = 2.0 m/s²

As we know that,

→ [tex]Force = Mass\times Acceleration[/tex]

or,

→ [tex]F = ma[/tex]

then,

      [tex]= 60\times 2.0[/tex]

      [tex]= 120\ N[/tex]

Thus the above answer is right.

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Find the y-component of this
vector:
0.250 m
18.40
Remember, angles are measured from
the +x axis.
y-component (m)
Enter​

Answers

Answer:

-0.0789 m

Explanation:

Recall that the y-component comes associated with the sin(18.4) through the following trigonometric relationship:

y = 0.250 sin(-18.4) ≈ -0.0789 m

Notice it is negative since it is below the x-axis.

Describe how a radiation is similar to b- radiation​

Answers

Complete question is;

Describe how α-radiation is similar to β-radiation?

Answer:

Explained below

Explanation:

The similarity between both alpha radiation and beta radiation is that in both cases, they both show deflection when they go through electric and magnetic fields. Although alpha deflects towards the negative plate while bets deflects towards the positive plate.

Secondly they both have high speeds. Just that alpha is from the helium nucleus while beta is from electrons.

Cancer can be treated with:
a) Radio waves
b) Infrared waves
c) Gamma wavesph​

Answers

Answer: C. gamma waves.

Explanation:

:)

The equation for centripetal force can be derived by substituting the equation for centripetal acceleration into Newton’s second law.


Please select the best answer from the choices provided

T
F

Answers

Answer:

True.

Explanation:

Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.

Mathematically, it is given by the formula;

Force = mass * acceleration

[tex] F = ma[/tex]

Centripetal acceleration is given by the formula;

[tex] Acceleration, a = \frac {v^{2}}{r}[/tex]

Where;

v is the velocity.

r is the radius.

The equation for centripetal force can be derived by substituting the equation for centripetal acceleration into Newton’s second law.

Let centripetal force be Fc

Fc = ma

Substituting the value of "a" into the above formula;

[tex] Fc = m \frac {v^{2}}{r} [/tex]

[tex] Fc = \frac {mv^{2}}{r} [/tex]

(Don't answer that there is no image, its a simple question)

If you have 2 of the 3 measurements of an object can you find the 3rd?

Explain:

Answers

Answer:

yes

Explanation:

of course indeed correct

Continental drift is______?

A:The movement of large land areas across earth's surface

B:The current that pushed Wegners hot air balloon

C:The movement of animals from Africa and South America ​

Answers

Answer is:

A:The movement of large land areas across earth's surface

Which of the following bounces light in another direction?
a) Sunglasses
b) lamp
c) mirror
d) prism​

Answers

Answer:

I do believe the answer is D. prism

Answer:

Explanation:

either all of the above or D <3

A skydiver of mass mmm jumps from a hot air balloon and falls a distance ddd before reaching a terminal velocity of magnitude vvv. Assume that the magnitude of the acceleration due to gravity is g.

Required:
Find the power Pd supplied by the drag force after the skydiver has reached terminal velocity v. (in same terms)

Answers

Answer:

Explanation:

When the object falling attains terminal velocity , net force on it becomes zero. That means drag force becomes equal and opposite to its weight.

So drag force = mg

where m is mass of falling body and g is acceleration due to gravity .

The drag force is constant . It is doing work against the weight of falling body . Object is falling v m /s . That means drag force is doing work per second as follows

Work done per second = force x displacement per second

= mg x v

So

Power of drag force = mgv.

Pd = mgv.

A scientist discovers a fossil of an animal and places it in the fossil record. The organism’s bones are similar to the bones of animal T, which appears earlier in the fossil record. Which conclusion is most reasonable?(1 point)

The fossils came from the same organism.

The fossils are from an ancestor of animal T.

The fossils are from animals that lived at the same time.

The fossils are from a descendant of animal T.

DO NOT PROVIDE FALL ANSWERS/ NO ANSWER

Answers

A. The fossils cam from the same organism

Hope this helps!

The fossils came from the same organism. This conclusion is most reasonable.

What is fossil?

A fossil is an item that has survived in the Earth's crust as a remnant, impression, or trace of an extinct animal or plant. The main repository for knowledge regarding the evolution of life on Earth is the complex of information preserved in fossils found all across the world.

Fossils of dinosaurs discovered in Alberta, Canada. Only a small percentage of extinct species have been preserved as fossils, and often only those with a sturdy skeleton are capable of doing so. A calcareous skeleton or shell is present in the majority of major groups of invertebrate creatures (e.g., corals, mollusks, brachiopods, bryozoans). Other types have silicon dioxide or calcium phosphate shells (both of which are found in the bones of vertebrates).

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convert 592 minutes to seconds. using one step conversion.

Answers

Answer:

35520

Explanation:

592 times 60=35520

Explain how clinical thermometer is use to determine the temperature of the body​

Answers

I don’t know I just need to answer something before I can ask stuff again
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