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A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 1.8 meters long and 0.9 meters high. A 4 kg block is released at the top of the ramp and slides down onto a frictionless horizontal surface where it hits and sticks to another block that has a mass of 5 kg. After the blocks travel some distance, the blocks come to a rough patch that has a coefficient of friction of 0.20 between the blocks and the rough surface. How far along the rough patch do the blocks go before stopping?
An old trick to find out if a train is coming is to put your ear on the rails of the track. Why is this more effective than just listening for the sounds the train makes in air.
A cylinder with a piston contains ½ mole of an ideal gas initially at pressure 4.0 x105 Pa and temperature 300K. Compute the maximum pressure
An airplane with a speed of 73.2 m/s is climbing upward at an angle of 40° counterclockwise from the positive x axis. Calculate the distance along the ground
The magnetic field inside a 5cm diameter solenoid is 2.0T and decreasing at 4.0 T/s. What is the electric field strength inside the solenoid
A sound wave of frequency 1840 Hz., propagating through air at 0 degrees Celsius, has a pressure amplitude of 15.0 Pa. What is the maximum particle speed
A spring is compressed by 0.0527 m and is used to launch an object horizontally with a speed of 2.19 m/s. at what angular frequency (in rad/s) would it oscillate
A bullet with a mass m = 4.83 g and initial speed of 330 m/s passes through a wheel which is initially at rest, What is the angular speed of the wheel just after the bullet leaves it
Antenna A and Antenna B emit coherent radio waves. Antenna A is 125m due north of Antenna B. Constructive interference occurs 175m due east of antenna B. Determine the three longest possible wavelengths being emitted by the antennae.
1) Compute the change in the internal energy of a thermodynamic system under the following scenarios: (i) 50 J of heat added and 40 J work extracted, (ii) 50 J of heat added and 75 J work extracted,
During an experiment you determine the cat off wavelength of a cathod ray tube to be λ0. What are the stopping voltage(potential) and electron velocity in terms of λ0 for second experiment
A line of charge starts at x = +x0 and extends to positive infinity. The linear charge density is λ = λ0x0/x, where λ0 is a constant. Determine the electric field at the origin.
Three 15 cm long rods form an equilateral triangle. Two of the rods are charged to + 13nC , compute the electric field strength at the center of the triangle
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