Physics Answers

calculate the energy stored in a magnetic field of solenoid of inductance 5 millinery when a maximum current 3 amp flows through it

determine both the mass and the charge of a block of material consisting of 3 x 10 ^27 protons,3 x10^37 neutrons, and 3.1 x 10^27 electrons

5: An object of mass m is projected with initial velocity v0 at an angle of θ degrees

to the horizontal. discuss the motion(position, velocity, acceleration) of the object

throughout the period of the flight. With appropriate choice of values for param￾eters (m, v0 and θ), plot the velocity and acceleration as functions of time on the

same graph. Discuss these graphs. Assume that the surrounding air offers no resistance

A 12 ohm resistor is in series with an 8 ohm load. What is the total source voltage if the voltage across the 12 ohm resistor is 36 Volts?

1. A resistor R in series with an 8 ohms resistor is connected across a 60 V voltage source delivering 2.5 A of current. Find the value of resistor R.

Explain the following observation on the basis of theory of relativity, the half-life of a

particular particle as measured in the laboratory comes out to be 4.0 × 10-8 s when its speed is 0.8c

and 3.0 × 10-8 s when its speed is 0.6c.

1. A sample of an ideal gas is enclosed in a rigid sealed container. At the time of sealing the container contained gas at a temperature of 25.0°C and at a pressure of 101 kPa.
2. The container is cooled down in a refrigerator. What is the pressure inside the container when the temperature has dropped to 5.5 °C? (to 3 s.f and in kPa)

A projectile is launched with 30m/s at an angle of 60°with the horizontal.(a) find the position of the projectile, and the magnitude and direction of its velocity at t=2s (b) find the time when the ball reaches the highest point.(c) find the horizontal range

A proton accelerates from rest in a uniform electric field of 5NC^-1. At some time later it's speed is 1.2×10^6 ms^-1. What is the acceleration of the proton

an object of mass 3.0 kg moving with an initial velocity of 5.0i m/s collide and sticks to an object of mass 2.0 kg with an initial velocity of -3.0j m/s find the final velocity of the composite object.