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How far down the road from the initial point that they passed each other will the cop catch the car?
A pendulum bob of length L has its motion interrupted by a peg vertically beneath the support. The bob is released when the string is horizontal. Find the minimum value for y in order for the bob to
A new planet which has ten times the mass of the Earth and four times the radius. a) What is the acceleration due to gravity on this planet?
If the ball is kicked at 45 degrees above the horizontal, what must its initial speed be if it is to just clear the bar. Express the answer in m/s and km/hr.
A locomotive of mass 21X10^3 kg travelling at 2.0m/s runs into an identical stationary locomotive.
What minimum coefficient of friction is necessary between the wall and the riders in order for there to be no tendency to slide down the wall?
A ball starts from rest and rolls down a hill with uniform acceleration, traveling 150 m during the second 5.0 s of its motion. How far did it roll during the first 5.0 s of motion?
A dolphin leaps out of the water at an angle of 23.3 ° above the horizontal. The horizontal component of the dolphin's velocity is 5.94 m/s. Find the magnitude of the vertical component of the v
A crate weighing 6.90 103 N is pulled up a 37° incline by a force parallel to the plane. If the coefficient of kinetic friction between the crate and the surface of the plane is 0.750, what is t
What is the change in its potential energy by the time it reaches the top of its trajectory?
Determine the pilot's mass and the reading on the scale when she is halfway up the front of the circle, at the very top of the circle and at the bottom of the circle. Include free body diagrams.
A .5-kg object is attached to a spring of spring constant 30 N/m and released from rest at t=0 from a position .25 m from equilibirum. Find the equation which describes its x location as a function
One gram of water changes from liquid to solid at a constant pressure of 1.00 atm and a constant temperature of 0°C. In the process, the volume changes from 0.60 cm3 to 1.10 cm3. Find the change
A merry-go-round rotates from rest with an angular acceleration of 1.50 rad/sec^2. How long does it take to rotate through (a) the first 2.00 rev and (b) the next 2.00 rev?
Calculate the work done by friction during one complete circular trip if the radius is (a) 2.00 m and (b) 4.00 m. (c) On the basis of the results you just obtained, would you say that friction is a
At a particular instant of time the velocity of the particle has components = 1.63×10^4 , = 3.12×10^4 , = 5.90(10)^4 What is the x-component of the force on the particle at this time?
Assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the tank. Answer in units of m/s.
If 1.0 m3 of concrete weighs 4.5 104 N, what is the height of the tallest cylindrical concrete pillar that will not collapse under its own weight? The compression strength of concrete (the maximum
A 10-m uniform beam of weight 100 N is supported by two ropes atthe ends. If a 400-N person sits at 2.0 m from the left end of thebeam, what is the tension in the left rope?
Suppose we send such a beam through a polarizing filter and then rotate the filter through 360° while keeping it perpendicular to the beam. If the transmitted intensity varies by a factor of 5.7
Ultraviolet light with a wavelength of 60nm shines on a gas of hydrogen atoms in their ground states. Some of the atoms are ionised by the light. What is the kinetic energy of the freed electrons in
A pendulum bob of mass 'm' is hung from a light string,the bob then moves in a horizontal circle of radius 'r' and the string makes an angle alpha with the vertical. If the angular velocity of the b
Sand drops from sationary hopper at the rate of 5kg/s on to a conveyor belt moving with a constant speed of 2m/s. What is the power delivered by the motor drawing the belt?
Determine the evaporator temperature at which a single-stage R22 plant will cease to produce any refrigerating effect in delhi where the condenser temperature is 42 degree C. the and the compressor
(a) Determine the energy of phonons, which can be created by a Brillouin inelastic scattering, as a function of the angle (phi) of scattering and (b) plot your results.