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3 years ago

6

An object of mass m is traveling in a circle with centripetal force f c. If the velocity of the object is v, what is the radius

of the circle?

1 answer:

Gnom [1K]3 years ago

7 0

Answer:

r = mv^2/ Fc

Explanation:

Got it right

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A 1500 kg car is moving 18 m/s how much force is required to bring the car to a stop in 12 seconds

Marat540 [252]

Answer:

2250N

Explanation:

F = Mv/t

Force F =?

Mass M = 1500kg

Velocity v = 18m/s

Time T = 12 secs

Therefore

F = 1500 x 18 /12

Multiply through

F = 27000/12

F = 2250N

3 0

3 years ago

It takes 120 minutes for a man to ride his bicycle up the road to Alpe d'Huez in France. The vertical height of the climb is 1,1

Greeley [361]

First solve the potential energy of the biker. using the fomula:
PE = mgh
where m is the mass of the object
g is the acceleration due to gravity ( 9.81 m/s2)
h is the height

PE = 96 kg ( 1120 m ) ( 9.81 m/s2)
PE = 1054771.2 J
then power = Work / time
P = 1054771.2 J / ( 120 min ) ( 60 s / 1 min)
P = 146.5 W

8 0

4 years ago

If the length of the air column in the test tube is 14.0 cm, what is the frequency of this standing wave?

GaryK [48]

Answer:

f = 614.28 Hz

Explanation:

Given that, the length of the air column in the test tube is 14.0 cm. It can be assumed that the speed of sound in air is 344 m/s. The test tube is a kind of tube which has a closed end. The frequency in of standing wave in a closed end tube is given by :

$f=\dfrac{nv}{4l}$

$f=\dfrac{1\times 344}{4\times 0.14}$

f = 614.28 Hz

So, the frequency of the this standing wave is 614.28 Hz. Hence, this is the required solution.

4 0

4 years ago

My guess is 15 but I’m not sure. Help please

erastovalidia [21]

The answer to your problem is 15

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I think it is maria but i am more sure than wondering

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