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2 years ago

15

Explain the conversion of energy in a roller coaster. Explain how energy is converted

1 answer:

tatuchka [14]2 years ago

5 0

As the rollercoaster goes up. kinetic energy changes to gravitational potential energy. When it moves back down, gpe changes back to ke.

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To have momentum, an object must be ______. A. heavy B. massive C. moving D. accelerating

Amiraneli [1.4K]

Momentum of the object can be calculated by multiplying the mass of the object and the velocity of the moving object. In this case, the starting situation should be the object should be moving, else there is no velocity and thus momentum is equal to zero .Answer is C

3 0

2 years ago

Read 2 more answers

A uniform magnetic field B=5.210 T is perpendicular to the plane of the paper (into the page). The current-carrying wire of valu

ehidna [41]

Answer:5.21 N

Explanation:

Given

B=5.210 T

I=2 A

L=0.5 m

Given Wire is perpendicular to Magnetic field

$\theta =90^{\circ}$

$F=IL\times B$

$F=BIL sin\theta$

$F=5.210\cdot 2\cdot 0.5 sin(90)$

F=5.210 N

as 1 Tesla =1 N/A/m

4 0

2 years ago

How does the interstellar medium affect our view of most of the galaxy?

Vsevolod [243]

Answer: It prevents us from seeing most of the galactic disk with visible and ultraviolet light.

(hope this helps) :)

8 0

2 years ago

If the temperature is held constant during this process and the final pressure is 671 torr , what is the volume of the bulb that

MariettaO [177]

Complete Question

The complete question is shown on the first uploaded image

Answer:

Explanation:

From the question we are told that

The initial pressure of the gas is $P_1 = 1.50 \ atm$

The volume of the second bulb is $V_2 = 0.800 \ L$

The final pressure of the gas is $P_2 = 671 \ torr = \frac{671 }{ 760} = 0.883 \ atm$

Let the unknown volume be represented as $V_1 = V \ L$

Generally from Boyle's law we have that

$P_1 * V_1 = P_2 * V_2$

=> $1.50 * V = 0.883 * 0.800$

=> $V = 0.479 \ L$

4 0

2 years ago

A 67.3-kg climber is scaling the vertical wall of a mountain. His safety rope is made of a material that, when stretched, behave

Monica [59]

Answer:

$d=0.59m$

Explanation:

From the question we are told that:

Mass $m=67.3 kg$

Spring constant $\mu=1.23 * 10^3 N/m$

Fall Height $h=0.921m$

Generally the Energy theorem equation for momentum is mathematically given by

Change in KE=Work done by gravity + work done by spring

$0=mg*(h + d) - \frac{\mu d^2}{2}$

$0=(67.3 * 9.81 (0.921 + d)) -\frac{(1.23 * 10^3 * d^2}{ 2}$

$0=608.1-660.213d-615d^2$

Solving Quadratic equation

$d=0.59m$

8 0

2 years ago