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Sergeu [11.5K]
3 years ago
15

Which statement is true for the hang time of a projectile?​

Physics
1 answer:
Andre45 [30]3 years ago
5 0

Answer:

The hang time of a projectile can be calculated solely by knowing the vertical component of the velocity of projection

Explanation:

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how fast in revolutions per minute must a centrifuge rotate in order to subject the contents of a test tube (30cm) from the axis
trapecia [35]

Answer:

ω=6684.51 rpm

Explanation:

r= 30cm= 0.3m

a= 15000gs (convert to m/s^{2}

1g = 9.8 m/s^{2}

a= 15000 *9.8 = 147000 m/s^{2}

a=\frac{v^{2} }{r}

147000 = \frac{v^{2} }{0.3}

147000*0.3 = v^{2}

44100 = v^{2}

√44100 = v

210m/s  = v

v=210m/s (linear velocity)

we will convert this to angular velocity

ω=\frac{v}{r}  

ω= 210/0.3

ω= 700 rads^{-1}

we will convert this to rev per minute

1rad per second = 9.5493 rev per minute

ω= 700*9.5493

ω=6684.51 rpm

4 0
4 years ago
Two people pull on the wagon each with a constant 20N force. Both people pull to the left. What is the Net Force on the wagon?
eduard

Answer:

I dont understand what you are trying to ask

Explanation:

5 0
3 years ago
Can I get the answer
ANEK [815]
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4 0
3 years ago
Hello people ~
lozanna [386]

Answer:

It’s called a conservative field.

Explanation:

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3 0
2 years ago
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What is the force in N of an object that has a mass of 7 kilograms and an acceleration of 4 m/s/s
VMariaS [17]

Newton's 2nd law of motion:         Force = (mass) x (acceleration)

If you want to move a 7-kg object with an acceleration of 4 m/s²,
then you will need to push it with (7 x 4) = 28 newtons of force.

4 0
3 years ago
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