3 years ago

When a deck of cards slips out of your hands and falls to the ground, gravity does work on it

Physics

2 answers:

gulaghasi [49]3 years ago

8 0

Answer:

Yes

Explanation:

But it falls slowly because it has air resistant acting on it. But when solving questions we usually ignore air resistance and take it as 0.

motikmotik3 years ago

3 0

Answer:

yes

Explanation:

You might be interested in

Mountains are part of which earth sphere?? Am I correct?

sammy [17]

You are correct. Mountains are part of the lithosphere.

8 0

3 years ago

Read 2 more answers

What are the inner planets relative distance from the Sun

Inessa [10]

Closer than the outer planets, inside the Asteroid Belt between Mars and Jupiter.

5 0

2 years ago

Read 2 more answers

A virtual image is formed 17.0 cm from a concave mirror having a radius of curvature of 39.0 cm. (a) Find the position of the ob

Wittaler [7]

Explanation:

Image distance, v = -17 cm (-ve for virtual image)

Radius of curvature of concave mirror, R = 39 cm

Focal length, f = -19.5 cm (-ve for a concave mirror)

(a) Using mirror's formula as :

$\dfrac{1}{v}+\dfrac{1}{u}=\dfrac{1}{f}$

$\dfrac{1}{u}=\dfrac{1}{f}-\dfrac{1}{v}$

$\dfrac{1}{u}=\dfrac{1}{-19.5}-\dfrac{1}{(-17)}$

u = 132.6 cm

So, the object is placed 132.6 cm in front of the mirror.

(b) Magnification of the mirror, $m=\dfrac{-v}{u}$

$m=\dfrac{-17}{132.6}$

m = -0.128

Hence, this is the required solution.

7 0

3 years ago

What is the force on a 1,000 kilogram-elevator that is falling freely under the acceleration of gravity only?

likoan [24]

   Force = (mass) · (acceleration)

   = (1,000 kg) · (9.8 m/s²)

   = 9,800 newtons

Why are you still having a problem with F = M · a ?

8 0

3 years ago

A beam with the following cross section is constructed with concrete of compressive strength of 4,000 psi and three fiberglass r

aleksandrvk [35]

Answer:

Explanation:

3 0

3 years ago