3 years ago

Why is it useful to calculate average speed?

Physics

1 answer:

Phantasy [73]3 years ago

4 0

When you are driving

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The football player running toward the goal line has

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2 years ago

Two charged objects separated by some distance attract each other. If the charges on both objects are doubled with no change in

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Answer:

(a) The force between them quadruples

Explanation:

According to coulomb's law, initial force between the two charged objects is given as;

$F_1=\frac{Kq_1q_2}{r^2}$

where;

k is coulomb's constant

q₁ is the charge on the first object

q₂ is the charge on the second object

r is the distance between the two objects

When the charges on both objects are doubled, then;

q₁ = 2q₁

q₂ = 2q₂

Force between the two charged objects will become

$F_2 = \frac{K2q_12q_2}{r^2} = \frac{4Kq_1q_2}{r^2} = 4(\frac{Kq_1q_2}{r^2}) = 4F_1$

Therefore, the force between them quadruples

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3 years ago

On Earth, the gravitational field strength is 10 N/kg. Calculate Ep for a 4 kg bowling ball have that is being held 2 m above th

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Answer:

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Ep = mgh

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3 years ago

4. What is the acceleration of the car in each section? b с d a

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