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An object of mass 4 kg is initially at rest on a frictionless ice rink. It suddenly explodes into three pieces . One chunk of mass 1 kg slides across the ice with a velocity 1.2 ms-1 i and another chunk of mass 2kg slides across the ice with a velocity 0.8 m.s-1 j. Determine the velocity of the third chunk in magnitude angle form
Two charges are placed between the plates of a parallel plate capacitor. One charge is +q1 and the other is q2 = +4.14C. The charge per unit area on each plate has a magnitude of = 1.88 × 10-6 C/m2.
A fire hose must be able to shoot a stream of water a specified height, straight up. Calculate the gauge pressure (difference between actual pressure
You decide to move your desk so your back is not facing the door. As you begin to move your desk, What is the coefficient of friction between the desk and the floor
A day on a distant planet observed orbiting a nearby star is 52.1 hours. Also, a year on the planet lasts 38.7 Earth days. Calculate the average angular speed of the planet
What is the magnitude of the acceleration of a modified At wood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg
estimate the % difference, which the use of isothermal compressibility instead of the adiabatic compressibility, would make to the calculated value of the speed of sound (340m/s)
A series R–L–C circuit of R= 210ohms , L= 0.950H and C= 2.25uF carries an rms current of 0.270A with a frequency of 100Hz. What is the average rate at which electrical energy is converted to heat in the resistor? P(R)= W What average power is deliver..
q1. if a car travelling at 63 kmh will skid 18 m when its brakes lock how far will it skid if it is travelling at 150
A factory worker pushes a 28.0kg crate a distance of 4.8m along a level floor at constant velocity by pushing downward at an angle of 28 below the horizontal. How much work is done by the normal force
They want to dock, which means they have to arrive at the same position at the same time with zero velocity. (a) What should the initial velocity of the second spacecraft be? (b) Illustrate what should be its constant acceleration?
An object is placed in front of a concave mirror with a focal length of 37 cm. What is the position of the resulting image if the image is upright
In the Bohr model of the hydrogen atom, what is the de Broglie wavelength for the electron when it is in the n = 2 level
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