Physics Answers

A hydraulic press has pistons of area 0.006m' and 0.350m', respectively. A force of 25 N is applied to the smaller piston. (a) What is the lifting force on the bigger piston? (b) Find the pressure exerted on the smaller piston and on the big piston.

A certain class of lamp takes 0.45A at 220V. How many such lamps can be run for an expenditure of power equal to 1 1/3 horsepower?

Calculate the capacitance of a capacitor whose plates are 25cm x 4.0 cm and are separated by a 2.0mm air gap.

an effort force of 200n is applied to an ideal machine to move a 750n resistance a distance of 30cm. what is the mechanical advantage of the machine?

You are driving your new taxi cab at the highway. Suddenly, an ambulance speeds off your way at 100km/hr. counter flowing from the usual path and is 30 meters away from you. You glanced at your speedometer and found out your instantaneous speed is 60 km/hr. You must react quickly at split-second to avoid accident. What could be the best thing to do?

A boy and girl jump off the edge of the pool. They jumped at the same speed and time, but the boy jumps mostly forward. What happened to the motion of the children after they leave the edge of the pool?

The decomposition of dinitrogen pentoxide at 45°c takes place according to the equation .

N2O5=2NO2+1/2O2

Explain the effect of increasing the temperature of a reaction on the rate of the reaction .

Define rhe term dielectric constant and explain why water is not suitable as a delectric

Two capacitor of capacitance C1 and C2 connected in series are joined to two other capacitors of capacitance of capacitances C3 and C4, which are connected in parallel .determine the equivalent capacitance of the circuit .