Other Physics Answers

Calculate absolute potential at 25 cm distance from 5 C charge.

Find the velocity aquired by an electron in falling through a potential difference of 2000 volts.

Upon the heating of black body the maximum of its spectrum shiftedfrom 690 nm to 500 nm. By what factor did the radiant emittance increase?

A girl throws a ball vertically upward at 10m/s from a roof of a building 20m high.

(a) How long will it take the ball to reach the ground?

(b) What will it's velocity be just before it strikes the ground?

A ball of mass 200g dropped from a height of 2m, hits the horizontal floor and rebound to a height h below it's initial position. If the coefficient of restitution is 0.8, calculate the value of h

Calculate the force on the wire

shown in the figure, given B=1.50 T, L=5.00

cm, and I=20.0 A.

a rocket is fired with an initial velocity of 100m/s at an angle of 50⁰above the horizontal .

it explodes on the mauntain side 12s after it is fring .what is the x-and y-coordinate of the rocket relative to its firing point?

9a.An artillery shell is fired with an initial velocity of 300 m/s at 62.5° above the horizontal. To clear an avalanche, it explodes on a mountainside 34.5 s after firing. What are the x- and y-coordinates of the shell where it explodes, relative to its firing point?

8b.A projectile is launched with an initial speed of 59.0 m/s at an angle of 35.0° above the horizontal. The projectile lands on a hillside 3.55 s later. Neglect air friction. (Assume that the +x-axis is to the right and the +y-axis is up along the page.)

(a) What is the projectile's velocity at the highest point of its trajectory?

(b) What is the straight-line distance from where the projectile was launched to where it hits its target?

8a.A house is advertised as having 1900 square feet under roof. What is the area of this house in square meters?