Magnetism produced by electric current is known as...............

With what velocity Must a 0.53 kg softball be moving to be equal to the momentum of a 0.31 kg baseball moving at 21 m/s

vladimir2022 [97]

Answer:12.28m/s

Explanation:

momentum of baseball =mass of baseball x velocity of baseball

Momentum of baseball =0.31x21

Momentum of baseball =6.51kgm/s

For a softball to have same momentum with the baseball we can say :momentum of baseball =mass of softball x velocity of softball

6.51=0.53 x velocity of softball

Velocity of softball =6.51/0.53

Velocity of softball =12.28m/s

3 0

3 years ago

51. A balloon starts rising from the ground, vertically upwards, uniformly at the rate of 1 m s-1. At the end of 4 seconds, a bo

strojnjashka [21]

Answer:

4s

Explanation:

when a bOdy rises into the air,the time it takes to reach a particular height is the same as the time it will take the body to fall from that height to the ground.

5 0

1 year ago

A simple accelerometer is constructed inside a car by suspending an object of mass m from a string of length L that is tied to t

Fittoniya [83]

Answer:

Part a)

$\theta = tan^{-1}\frac{a}{g}$

so here the angle made by the string is independent of the mass

Part b)

$a = 4.16 m/s^2$

Explanation:

Part a)

Let the string makes some angle with the vertical so we have force equation given as

$Tcos\theta = mg$

$T sin\theta = ma$

so we will have

$tan\theta = \frac{ma}{mg}$

$\theta = tan^{-1}\frac{a}{g}$

so here the angle made by the string is independent of the mass

Part b)

Now from above equation if we know that angle made by the string is

$\theta = 23 degree$

so we will have

$tan23 = \frac{a}{g}$

$a = g tan23$

$a = 9.81(tan23)$

$a = 4.16 m/s^2$

6 0

3 years ago

Read 2 more answers

A source injects an electron of speed v = 2.9 × 107 m/s into a uniform magnetic field of magnitude B = 1.7 × 10-3 T. The velocit

34kurt

Answer:

r = 0.664 m.

Explanation:

Let's write the equation of the magnetic force, the blacks syndicate vectors

F = q v x B

From this expression we see that the force is perpendicular to the velocity and the field, so it is a centripetal force, the modulus of the force is

F = q v B sinT

We write Newton's second law

F = m a

a = v² / r

q v B sinT = m v² / r

r = m v / (q B sinT)

Let's calculate

r = 9.1 10-31 2.9 107 / (1.6 10-19 1.7 10-3 sin8.4)

r = 26.4 10-24 / 0.3973 10-22

r = 0.664 m

This is the distance from where the electron penetrates

7 0

3 years ago

Consider the wave function for a particle in a box of size L,

malfutka [58]

Answer:

that is the Answer

it was sow dificult

6 0

2 years ago