Other Physics Answers

A baseball is shut with an initial speed of 12.0m/s.

(a) how far does it go in the horizontal direction if it is shut at angle (I) 15° (ii) 50° (III) 45 and (iv) 60° above the horizontal

Compute the kenetic energy of a 4500kg truck at the instant it's velocity is 24m/s.

A vacuum cleaner was pulled with a force of 62.0N at an angle of 60.0° with the horizontal.calculate the work done by the force on the vacuum cleaner as the vacuum is displaced 480cm to the right

What is differential amplifier? Find the voltage gain for the transistor Q1 of the differential amplifier?

1. A person on crutches weighs 170 lb. Each crutch makes an angle of

22 degrees with the vertical (as viewed from front). Half of the person’s weight

is supported by crutches, the other half by the vertical forces exerted by the ground on his feet. Assuming he is at rest and the force exerted by the ground on the crutches acts along the crutches, determine the

magnitude of the compression force supported by each crutch.

2. A man whose height is 130 centimeters lies on a board supported by two scales. One scale is under the top of his head and one beneath the bottom of his feet. The two scales read, 33 kilograms and 30 kilograms, respectively. How far is the center of gravity of this man from the bottom of his feet?

For the vectors  and  in the figure shown, use the method of components to find the magnitude and direction of

(a) the vector sum  +  

(b) the vector sum  +  

(c) the vector difference  -

(d) the vector difference  -

If the current in a vertical wire is directed upward, what is the direction of the force in this

wire if it is placed in a magnetic field which is horizontal and directed towards north?

If the force between +17μC charge and -23μC charge is 0.25671 N, what is the distance between them?​

Dean is slowing down on his skateboards. He starts at a speed of 5.5 m/s and

slows to 1.0 m/s over a time of 3.0 seconds. What is Dean's acceleration?