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Paul [167]
3 years ago
7

A hollow sphere is rolling without slipping across the floor at a speed of 5.7 m/s when it starts up a plane inclined at 40° to

the horizontal.
(a) How far along the plane (in m) does the sphere travel before coming to a rest?
(b) How much time elapses (in s) while the sphere moves up the plane? S
(c) Explain these results as compared to those for a marble (solid sphere).
i. The hollow sphere has a larger moment of inertia and therefore is easier to bring to rest than the marble (solid sphere). The distance traveled is smaller, and the time elapsed is shorter.
ii. The hollow sphere has a larger moment of inertia and therefore is easier to bring to rest than the marble (solid sphere). The distance traveled is smaller, and the time elapsed is longer.
iii. The hollow sphere has a larger moment of inertia and therefore is harder to bring to rest than the marble (solid sphere). The distance traveled is larger, and the time elapsed is shorter.
iv. The hollow sphere has a larger moment of inertia and therefore is harder to bring to rest than the marble (solid sphere). The distance traveled is larger, and the time elapsed is longer.
Physics
1 answer:
slega [8]3 years ago
8 0

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.

Explanation:

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What is the meaning of <br> insanity is relative
Luba_88 [7]

Answer:

“Insanity is relative. It depends on who has who locked in what cage.” R.D. Laing: “Insanity – a perfectly rational adjustment to an insane world.” Nora Ephron: “Insane people are always sure that they are fine. It is only the sane people who are willing to admit that they are crazy.”Sep 20, 2012

Explanation:

6 0
3 years ago
The color of light in the electromagnetic spectrum is determined by its
JulijaS [17]

A. Wavelength


The electromagnetic spectrum is determined by wavelength.  Visible light is a section of the electromagnetic spectrum, and within it, light is further classified into colors by wavelength.  Red waves are longer than violet waves.


Hope this helps!!

8 0
3 years ago
List any similarities between discovered exoplanets and planets in our solar system.
gregori [183]

Answer:

1. Revolve around a point

2. Formed from dust and gas particles

3. Exoplanets and associated star orbit a common center of mass  

4. Composed of gases found in Jupiter and Saturn

3 0
3 years ago
An ammeter is connected in series with a resistor of unknown resistance R and a DC power supply of known emf e. A student uses t
rosijanka [135]

Answer:

B:The actual power dissipated by the resistor is less than P because the ammeter had some resistance.

Explanation:

Here,power has been calculated using current I and total EMF \ε . So,P=EMF*current= ε I will represent total power dissipated in resistor and ammeter.

Now, this total power P has been dissipated in both resistor and ammeter. So, power dissipated in resistor must be less than P as some power is also dissipated in ammeter because it has non-zero resistance.

So, the answer is B:The actual power dissipated by the resistor is less than P because the ammeter had some resistance.

Note that option A,C and E are ruled out as they state power dissipated by resistor is greater than or equal to P which is false.

Also,option D is ruled out as ammeter is connected in series.

8 0
4 years ago
Two students, standing on skateboards, are initially at rest, when they give each other a shove! After the shove, one student (7
Elden [556K]

Answer:

The other student (59kg) moves right at 7.44 m/s

Explanation:

Given;

mass of the first student, m₁ = 77kg

mass of the second student, m₂ = 59kg

initial velocity of the first student, u₁ = 0

initial velocity of the second student, u₂ = 0

final velocity of the first student, v₁ = 5.7 m/s left

final velocity of the second student, v₂ = ? right

Apply the principle of conservation of linear momentum;

Total momentum before collision = Total momentum after collision

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

(77 x 0) + (59 x 0) = (-77 x 5.7) + (59 x  v₂)

0 = - 438.9 + 59v₂

59v₂ = 438.9

v₂ = 438.9 / 59

v₂ = 7.44 m/s to the right

Therefore, the other student (59kg) moves right at 7.44 m/s

6 0
3 years ago
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