2 years ago

What forces are acting on the book?

Physics

1 answer:

Vlad [161]2 years ago

3 0

Answer:

please specify you question well

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Stells [14]

<h3><u>Answer;</u></h3>

= 64 N/m

<h3><u>Explanation</u>;</h3>

According to Hooke's Law for a helical spring or an elastic material, extensional force is directly proportional to the distance the material has extended.

F = ke; where F is the extension force, k is the spring constant, and e is the distance extended.

Thus;

k = F/e

= 44N/0.69 m

= 63.768 N/m

<u>= 64 N/m</u>

8 0

3 years ago

A 0.144kg baseball is pitched horizontally at 38.0 m/s. After the baseball is hit by the bat, it moves at the same speed, but in

Hoochie [10]

Answer:

Given:

mass of the ball m = 0.144 kg

velocity v = 38 m/s

now, change in momentum

P = m v- ( - mv)

= 2 mv

=2 x (0.144) x (38)

= 10.944 kg-m/s

Impulse J= F. Δt

change in momentum is equal to impulse

J = 10.944 kg-m/s

we know force is equal to change in momentum per unit time

$F = \dfrac{P}{t}$

$F = \dfrac{10.944}{0.8\times 10^{-3}}$

F = 13.68 x 10³ N

F = 13.68 kN

3 0

4 years ago

Once broken into parts curved motion can be worked as ________________ problems along both axes.

vovikov84 [41]

Answer:

projectile motion

Explanation:

i am not sure sorry

8 0

4 years ago

One radian per second is equal to?

Ostrovityanka [42]

One radian per second is equal to 206265 seconds of arc. (On a plane angle)

4 0

3 years ago

State four advantages of Mercury over alcohol as thermometric liquids

Gemiola [76]

Answer:

Alcohol wets glass while mercury doesn't
Alcohol has a lower boiling point and hence cannot be used to measure very high temperature.
Alcohol is colorless and is very difficult to read without coloration.
Mercury's expansion is uniform.

6 0

3 years ago