2 years ago

A projectile is to be launched at an angle of 30° so that it falls beyond the pond of length 20 meters as shown in the figure.

Physics

1 answer:

marin [14]2 years ago

4 0

Answer: A

Explanation:

I want my points so yea

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How much is the force of gravity on Mr.Arbo if his mass is 74.8kg?

PtichkaEL [24]

Answer:

Force due to gravity in earth = 74.8*9.8 = 733.04 N

Explanation:

We have mass of Mr. Arbo = 74.8 kg

Force of gravity = Weight = Mass * Acceleration due to gravity value of planet.

In earth acceleration due to gravity value = 9.8 $m/s^2$

So force due to gravity in earth = 74.8*9.8 = 733.04 N

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4 years ago

A spherical object (with non-uniform density) of mass 16 kg and radius 0.22 m rolls along a horizontal surface at a constant lin

Lapatulllka [165]

Answer:

Kr = 0.7618K

Explanation:

Suppose that the object's velocity is V, then his kinetic energy is:

K = $\frac{mv^{2} }{2}$

K = $\frac{(16)v^{2} }{2}$

K = 8 $v^{2}$

The rotational kinetic energy is

Kr = $\frac{Iw^{2} }{2}$

where I: The moment of inertia

ω: angular velocity

Kr = $\frac{(0.59)w^{2} }{2}$

Kr = 0.295 $w^{2}$

How the movement is without slipping, then

ω = $\frac{v}{r}$

ω = $\frac{v}{0.22}$

Thus

Kr = $\frac{0.295v^{2} }{0.22^{2} }$

Kr = 6.095 $v^{2}$

8 $v^{2}$ ----> 1

6.095 $v^{2}$ ----->?

Kr = 0.7618K

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Andreas93 [3]

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Glucose, starch and cellulose are all carbohydrates.

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