Physics Answers

a geosynchronous satellite is one that stay above the same point on the equator of the earth,so what is the period of such satellite in seconde

Blocks A and B are moving toward each other. A has a mass of 6.7

and a velocity of 6.5m/s, while B has a mass of 9.2kg and a velocity of −5.9m/s. They suffer a completely inelastic collision. During the collision, how much kinetic energy is lost? Only give the numerical value and don't include the unit

A book is sitting on your desk. What is the normal force of the book that has a weight of 35kg?

Group of answer choices

343N

343 lb

3.57 N

0 N

a race car accelerates uniformly from 18.5m/s to 46.1m/s in 2.47 seconds. Determine the acceleration of the car and the distance traveled

two gliders with different masses move toward each other on a frictionless air track. after they collide, glider b has a final velocity of 2m/s. the gliders are equip so that they stick together when they collide. find the common final x-velocity and compare the initial and final kinetic energies of the system.

Three balls are attached to a cable and are being rotated. Ball (A) is 0.5 kg and is 1.0 meter away from the axis of rotation. Ball (B) is 1.0 kg and placed 0.8 meter away from the axis. Ball (C) which is 0.5 meter away from axis.

The length of a bicycle pedal arm is 0.142m, and a downward

Force of 111N is applied to the pedal by the rider's foot. What is the magnitude of the torque about the pedal arm pivot when the arm makes an angle of

(A.) 30°

(B) 90°

(C.) 180°

With the vertical?

In Amplitude modulation, Vestigal Side Band (VSB) is one of the technique used to overcome its limitations in terms of power and bandwidth. With this in mind; a. Explain how a VSB signal is generated in the transmitter. b. Draw and compare the frequency spectrum of the original message signal and the spectrum of the VSB signal in a frequency domain. c. Show how the bandwidth of VSB is calculated by writing the equation. d. Give one application of VSB in broadcasting.

A modulating signal m(t)=10cos(2π×103t) is amplitude modulated with a carrier signal c(t)=50cos(2π×105t).

Find the modulation index, the carrier power, and the power required for transmitting AM wave.

The diameter d, of a wire is (0.56m 0.01mm) if it's cross sectional area A is given by m², calculate the following; I)The maximum fractional uncertainty in A (ii) maximum uncertainty in A (iii) cross sectional area of the wire.