Other Physics Answers

A fan blades start from rest and move with a constant angular acceleration and reaches an angular speed of 14.0rad/s.find (a) the magnitude of the angular acceleration of the wheel

(B) the angle (in radians) through which it rotates in this time.

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A KTM Commuter train travel between two station, A and B. The train starts from rest from station A and accelerates at a constant rate for 0.5 km until it reaches a speed of 30 m/s. It then travel at this constant speed for T s before decelerating at a constant rate of 1.5 m/s and coming to rest at station B. Determine the value of T if the distance between the two stations 6km. Calculate also the total time taken for the whole journey.

Imagine that a satellite weighing 2500 kg revolves around the Earth in a circular path. How much work does the Earth do on top of the satellite?

A load of mass 120kg is raise vertically through a high of 2m in 30s by a machine whose efficiency is 100% calculate power generated by the machine

The illustration shows a lamp and a candle illuminating a screen positioned between them at 0.34 m. If the lamp is moved to a distance r = 0.588 m, how much brighter must the lightbulb be than the candle to have the same illuminance on the screen?

Four point charges are equally separated by 1.00 m in air. If q1 = 3.0 nC, q2 = -4.0 nC, q3 = 2.0 nC, and q4 = -5.0 nC, what is the electric field at a point halfway between q2 and q3? show the equation, solution and complete answer.

A boy of mass 60kg jumps of a building of height 3.2m. Calculate the time and velocity with which he would fall to the ground. Also calculate the acceleration with which he would fall if his weight was reduced to how much he would have weighed if he was on the moon. (g = 10m/s2)

A hockey puck B rests in a smooth ice surface and is struck by a second puck A,

which was originally traveling at 40.0 m/s and is deflected 30.0° from its original

direction. The pucks have the same mass. (a) Compute the speed of each puck after

the collision. (b) What fraction of the original kinetic energy of puck A dissipates

during collision?

aqual and opposite charges a certain distance apart are called an electric "dipole*. A

positive test charge +q is placed as shown, equidistant from the two charges.

Q

O

Which diagram below gives the direction of the net force on the test charge? (B)

D)

16. A hydrogen nucleus, which has a charge , is situated to the left of a carbon nucleus, which has

a charge 6e. Which statement is true?

A) The elextrical force experienced by the hydrogen nucleus is to the right, and the magnitude

is equal to the

force exerted on the carbon nucleus.

B) The electrical force experienced by the hydrogen nucleus is to the left, and the magnitude

is less than the force exerted on the carbon nucleus,

) The electrical force experienced by the hydrogen nucleus is to the left, and the magnitude

is greater than the force exerted on the carbon nucleus.

D) The electrical force experienced by the hydrogen nucleus is to the left, and the magnitude

is equal to the force exerted on the carbon nucleus.