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Q1. A meterstick is at rest in an inertial frame S2. If S2 moves with a speed of 0.7c with respect to a rest frame S1, find the length of the meterstick as measured in frame S1 according to classical physics. Reply in units of m.
Q2. A baseball pitcher can throw a ball with a speed of 70 {rm m/s}. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 20 {rm m/s}. What is the speed of truck?
Suppose a star with radius 8.39 multiply.gif 108 m has a peak wavelength of 686 nm in the spectrum of its emitted radiation. What is the surface temperature of the star
Compute the magnitude & direction of the current.
If a cube of a certain metal increases its volume from 15 cm3 to 17 cm3 as the temperature increases from 12°C to 28°C
In a series R-L-C circuit, L=0.200 H, C=80.0 microfarads, and the voltage amplitude of the source is 240 V. What is the resonance angular frequency of the circuit
To separate two pieces of paper whose area is 10 cm by 10 cm, you blow across them with an air speed of 2.40 m/s. What is the resulting force on each
A motorcycle is traveling up one side of a hill and down the other side. Determine the maximum speed that the cycle can have
a person pulls on a 50Kg desk with a 200N force acting at 30 angle above the horizontal. the desk does not budge. draw a force diagram for the desk. Write down the equation that describes the forces which act in the x-direction.
A 6.0kg crate is pushed from the top of an incline and travels down the incline with an initial speed of 8m/s.find loss of potential energy
a positive charge of -4 microcoulombs is llocated at the center of a spherical shell of inner radius 2cm and outer radius 3cm, what is the total charge on he inner shell
An electron is accelerated from rest through a potential difference that has a magnitude of 2.70 × 107 V. The mass of the electron is 9.11 × 10-31 kg, What is the relativistic kinetic energy (in joules) of the electron
A long, straight wire runs along the axis of the solenoid, carrying a current of 15. Find out the magnitude of the net magnetic field a radial distance of 0.80 from the straight wire.
in a science fiction movie a 100 g base ball travelling with a speed of 60m/s and an electron travelling at a speed of 1.2*10^8 m/s are approaching each other for a head on collision, what is the momentum of the base ball
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