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mote1985 [20]
4 years ago
12

if we decrease the amount of force and keep all other factors the same what will happen to the amount of work

Physics
1 answer:
Ivan4 years ago
7 0
The amount of work will decrease as the force decreases because work is equal to force multiplied by displacement.
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What kind of reaction occurs when potassium is placed in water? a. a single-displacement reaction c. a decomposition reaction b.
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The equation for potassium in water is:
K(s) + H20(l) --> H2(g) + K20(aq)
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4 years ago
A student sees a newspaper ad for an apartment that has 1330 square feet (ft^2) or floor space. How many square meters of area a
Natasha2012 [34]
<span>=1330 ft^2 x (1m^2/3.25 ft^2)
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6 0
3 years ago
A railroad freight car, mass 15,000 kg, is allowed to coast along a level track at a speed of 2.0 m/s. It collides and couples w
gayaneshka [121]

Answer:

The speed of the two cars after coupling is 0.46 m/s.

Explanation:

It is given that,

Mass of car 1, m₁ = 15,000 kg

Mass of car 2, m₂ = 50,000 kg

Speed of car 1, u₁ = 2 m/s

Initial speed of car 2, u₂ = 0

Let V is the speed of the two cars after coupling. It is the case of inelastic collision. Applying the conservation of momentum as :

m_1u_1+m_2u_2=(m_1+m_2)V

V=\dfrac{m_1u_1+m_2u_2}{(m_1+m_2)}

V=\dfrac{15000\ kg\times 2\ m/s+0}{(15000\ kg+50000\ kg)}  

V = 0.46 m/s

So, the speed of the two cars after coupling is 0.46 m/s. Hence, this is the required solution.          

3 0
3 years ago
A coin completes 18 spins in 12 seconds. The centripetal acceleration of the edge of the coin is 2.2 m/s2. The radius of the coi
nlexa [21]
In order to find the radius of the coin, we need to use:

Ac = V^2 r

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so,
<span>2.2 = 9(π^2)(r^2) / r 
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</span>
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4 0
3 years ago
Read 2 more answers
Radiation from the Sun reaching Earth (just outside the atmosphere) has an intensity of 1.4 kW/m2. (a) Assuming that Earth (and
baherus [9]

To solve the problem we will require the concept of Force as a definition of pressure and Area, and the concept of light pressure itself determined by the relationship between intensity and the speed at which light travels. We will match the terms and find the desired force value,

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P = Pressure

A = Area

Pressure due to the light of the sun will be

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Here,

I = Intensity

c = Speed velocity

Equation both therms we have that

F = \frac{IA}{c}

We have a circular area then

F = \frac{I(\pi r^2)}{c}

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F = 6.0*10^8N

Therefore the Force on Earth due to radiation pressure is 6*10^8N

4 0
3 years ago
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