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Luba_88 [7]
3 years ago
14

A block slides at constant speed down a ramp while acted on by three forces: its weight, the normal force, and kinetic friction.

Respond to each statement, true or false.
Physics
1 answer:
Afina-wow [57]3 years ago
4 0

Answer:

a) True

b)False

c)False

• Had to complete the question first.

A block slides at constant speed down a ramp while acted on by three forces: its weight, the normal force, and kinetic friction. Respond to each statement, true or false.

(a) The combined net work done by all three forces on the block equals zero.

(b) Each force does zero work on the block as it slides.

(c) Each force does negative work on the block as it slides.

Explanation:

Net work is the change in kinetic energy, which leads to final kinetic energy - our initial kinetic energy this is the formula for net work. This is the working energy theorem, a theorem that states that the net work on an object induces a change in the object's kinetic energy.

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Explanation:

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For a cylindrical capacitor, the capacitance does not depend on which of the following values?
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Answer:

Capacitance of cylindrical capacitor does not depends on the amount of charge on the conductors

Explanation:

Consider a cylindrical capacitor of length L, inner radius R₁ and outer radius R₂, permitivity ε₀ constant then capacitance of cylindrical capacitor is given by:

C=\frac{2\pi \epsilon_{o}L}{ln\frac{R_{2} }{R_{1}} }

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4 years ago
You are at the top of the Empire State Building on the 102nd floor, which is located 373 m above the ground, when your favorite
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Answer:

1.5 m

Explanation:

H = actual height of the superhero = ?

H₀ = height of the superhero as observed = 1.73 m

v = speed of the superhero = 0.50 c

Using the equation

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Inserting the values

H = 1.73 \sqrt{1 - \left ( \frac{0.50 c}{c} \right )^{2}}

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An athlete on a sled is moving with a speed of 3.0 m/s across a pond covered with ice. If the total mass of the sled-athlete sys
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Given Information:

Mass = m = 95 kg

Initial velocity = v₁ = 0 m/s

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time = t = 15 seconds

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Explanation:

From the Newton's second law of motion

F = ma

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v₂ = v₁ + at

at = v₂ - v₁

a = (v₂ - v₁)/t

a = (3 - 0)/15

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Therefore, the magnitude of the average force required to bring the sled to rest is 19 N.

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