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Feliz [49]
3 years ago
9

PLEASE HELP

Physics
1 answer:
Papessa [141]3 years ago
6 0
Y = v0t + 1/2gt^2.
v0 is 0 as it is at rest initially. So now we have y=1/2gt^2 so 60=1/2(9.8)t^2 and we must solve for t. t= about 3.5 seconds. Since the acceleration is 9.8 m/s^2 we do 9.8 m/s^2 times 3.5 seconds to get 34.3 m/s.
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6 0
3 years ago
What is the minimum work needed to push a 920-kg car 310 m up along a 6.5 ∘incline? Ignore friction.Express your answer using tw
AVprozaik [17]

Answer:

2800000J

Explanation:

Parameters given:

Mass = 920kg, weight = 920 * 9.8 = 9016N

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W = F*d*cosA

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7 0
3 years ago
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Anettt [7]

Answer:

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Radius of Earth, r=6.37\times 10^6\ m

We need to find the force of gravity above the surface of Earth. It is given by :

F=G\dfrac{mM}{R^2}

R = r + d

R = 25370000 m

F=6.67\times 10^{-11}\times \dfrac{5.97\times 10^{24}\ kg\times 1.2\ kg}{(25370000\ m)^2}

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So, the force of gravity on the object is 0.74 N. Hence, this is the required solution.

5 0
4 years ago
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PtichkaEL [24]

Answer:

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Explanation:

We have,

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Speed of the ball is 6 m/s

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p = mv

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7 0
4 years ago
Ideas of the atom have changed over time.
Lunna [17]
An atom is solid material
7 0
4 years ago
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