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A hollow sphere of radius 0.15 m, with rotational inertia I = 0.082 kg m^2 about a line through its center of mass, rolls without slipping up a surface inclined at 30° to the horizontal. At a ce
(a) What is the speed of the three coupled cars after the collision? (b) How much kinetic energy is lost in the collision?
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 50.0 m/s and returns the shot with the ball traveling horizontally at 40.0 m/s in the opposite direction. (a) What
When the block leaves the wedge , its velocity is measured to be 4.00 m/s to the right. (a) What is the velocity of the wedge after the block reaches the horizontal surface? (b) What is the height o
When you stand on your head, what is the difference in pressure of the blood in your brain compared with the pressure when you stand on your feet if you are 1.85 m tall? The density of blood is 1060
If the curve were flat, what would the minimum coefficient of static friction between the tires and the roadbed have to be in order to provide the total acceleration with no slipping or skidding whe
The average intensity of sunlight at the top of the earth's atmosphere in 1390 W/m2. What is the maximum energy that a 24-m x 45-m solar panel could collect in 1.3 hours in this sunlight?
In an action movie, the hero grabs a rope attached to the rafters of a warehouse to swing across to the other side. If his arms are capable of exerting a force of 2000 N on the rope, what is the max
Find the location of the final image by ray tracing (make a scale diagram) and then verify this location by using the lens equation.
Two identical diverging lenses are separated by 15 cm. The focal length of each lens is -8.0 cm. An object is located 4.0 cm to the left of the lens that is on the left. Determine the final image di
A uniform solid spherical planet of radius 4978000 m produces a gravitational acceleration of 8.9 m/s^2 on its surface. At what two distances from the center of the sphere is the gravitational acce
Calculate the value a force must have to keep a 20 kg mass moving up a plane inclined at 34 degrees at a constant speed. Is there an angle for the plane at which no horizontal force can keep the mas
What is the magnitude of the gravitational force due to the sphere on a particle of mass 4.2 kg located at a distance of 69 m from the center of the sphere?
How long (in centimetres) is a single pulse in air? How long is it in water (n = 1.33)? How many wavelengths fit in one pulse? What is the total electromagnetic energy in one pulse?
Two stars are orbiting each other. This is called a binary star system. Star A has a mass of 7.5 x 10^30 kg and star B has a mass of 5.8 x 10^29 kg. The stars are 7.2 x 10^11 m apart.
A 56 g hollow copper cylinder is 10 cm long and has an inner diameter of 1.0 cm. The current density along the length of the cylinder is 1.7x10^5 A/m^2. What is the current in the cylinder?
Comic-strip hero Superman meets an asteroid in outer space, and hurls it at 950 m/s, as fast as a bullet. The asteroid is two thousand times more massive than Superman. In the strip, Superman is see
If the arm is 5.00 m long and pivots about one end, at what angular speed (in rpm) should it spin so that the acceleration of the lander is the same as the acceleration due to gravity at the surface
Two parallel conducting plates are connected to a constant voltage source. The magnitude of the electric field between the plates is 2,000 N/C. If the voltage is doubled and the distance between the
An electron is in a uniform magnetic field B that is directed out of the plane of the page. When the electron is moving in the plane of the page from the top of the page to the bottom, the force on
Your science fiction writer friend has another harebrained idea. She wants to launch ore mined on the Moon to a processing station in orbit around the Earth. Bins with 1000 kg of ore will be launche
A 2.6 kg block of wood sits on a table. A 3.0g bullet, fired horizontally at a speed of 550m/s , goes completely through the block, emerging at a speed of 250 m/s. What is the speed of the block imm
Calculate the value a force must have to keep the mass moving up the plane (vertical plane) at a constant speed. Is there an angle for the plane at which no horizontal force can keep the mas moving
A particle of mass m , initially at rest at x=0, is accelerated by a force that increases in time as F=Ct^2. a) Determine its velocity v as a function of time.
How many revolutions does the electron make along its helical path within the solenoid by the time it emerges from the solenoid by the time it emerges from the solenoid's opposite end?