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3 years ago

What is the momentum of a bird with a mass of 0.018kg flying at 15m/s?

Physics

1 answer:

Mazyrski [523]3 years ago

6 0

Answer:

0.27 kg-m/s

Explanation:

i believe this is the correct answer

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What is the approximate weight of a 20-kg cannonball on Earth? 2 N 20 N 196 N 1,960 N

Margaret [11]

Since weight is the force an object is exerting on another object, and the formula to calculate force is Force = Mass * Acceleration, the answer to your question is 196 N, since the mass of the cannonball times Earth's gravitational pull equals 196 N.

5 0

4 years ago

Read 2 more answers

a particle is moving in a circle of radius R with constant speed.The time period of particle is T=1 second.In a time t=T/6,if th

12345 [234]

at t=T/6, total distance covered= 2*pi*r/6 and displacement= r

difference of them = 2*t
so, 2*pi*r/6- r =2(1/6)=1/3

r=1/(pi-3)=7.062

4 0

3 years ago

Read 2 more answers

A charged particle moving through a magnetic field at right angles to the field with a speed of 24.7 m/s experiences a magnetic

Sunny_sXe [5.5K]

Answer:

Explanation:

let the charge is q. velocity, v = 24.7 m/s

magnetic force, F = 2.38 x 10^-4 N

Let the magnetic field is B.

Velocity, v' = 5.64 m/s

angle, θ = 21.2°

The force experienced by a charged particle placed in a magnetic field is given by

F = q x v x B x Sinθ

in first case

2.38 x 10^-4 = q x 24.7 x B x Sin 90 .... (1)

in second case

F = q x 5.64 x B x Sin 21.2° .... (2)

Divide equation (2) by equation (1), we get

$\frac{F}{2.38\times 10^{-4}}=\frac{5.64\times Sin 21.2}{24.7\times Sin 90}$

F = 1.97 x 10^-5 N

7 0

4 years ago

Fossil fuels has been used more in the existing world. Why?

Inga [223]

Answer:

fossil fuels are being used more because fossil fuels are of great importance because they can burn to produce a significant amount of energy per unit mass the use of coal as a fuel prefates recorded history.

Explanation:

Hope this helps! :)

3 0

3 years ago

Suppose that the metal cylinder in the last problem has a mass of 0.10 kg and the coefficient of static friction between the sur

andrew11 [14]

Answer:

The speed maximum speed is $0.49ms^{-1}$

Explanation:

The centrifugal force always acts on the cylinder and move away the rotating platform from the rotational axis. so the centripetal force provide by the frictional force:

Therefore

$\frac{mv^{2} }{r} =u_{s} mg$