Physics Answers

Find the distance and angle of a vector if the x-component is 38.37 m and the y-component is 61.30m. 

A flat surface of area 1.25 m2 is rotated through a uniform horizontal electric field of 5 N/C. What is the electric flux if the surface is (a) parallel and (b) perpendicular to the electric field?

At the three consecutive corners of a square, 10 cm on each side, are point charges 4 x 10^-6 C, 8 x 10^-6 C, and 12 x 10^-6 C, respectively. Find the E_P at the fourth corner of the square.

How many grams of an unknown gas having a molecular weight of 24.34 g/mol will be produced at STP?

A force of 60 N is applied to the end of our range 12 cm long. How much torque is produced? What is the direction of the torque?

The length of a bicycle pedal arm is 0.152 m, and a downward force of 111 N is applied to the pedal by the riders foot. What is the magnitude of the talk about the bed alarm five on point when the arm makes an angle of (a) 30°, (b) 90°, and (c) 180° with vertical?

A satellite orbits Earth at an altitude of 356 kilometers above the planet's surface. Compute for its (a) radius (b) speed (c) orbital period. (ME=5.97x10^24 kg)

Two equal charges are separated 75cm apart in free air. Calculate the quantity of either charge if the force between them is 0.17N. What will be the quantity if the charges are situated in an insulating medium of dielectric constant 10?

A stretched wire emits a fundamental note of 256Hz keeping the stretching force constant and reducing the length of wire by 10cm, the frequency becomes 310Hz . Calculate the original length of the wire

Mattias stands in front of a cliff. He shouts "Hello". After 0.4 s here he echoes.

 How far from the cliff is Mattias? Round to ten meters.