Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
What is the minimum current in the rod that will cause it to float in a horizontal magnetic field of 1.70972 T?
Speedboat A negotiates a curve whose radius is 160 m. Speedboat B negotiates a curve whose radius is 180 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the s
what is the probability that an electron energy state in Ge will be occupied at temperature T=300 K if the energy state is greater than the Fermi energy by 2 eV? Repeat the calculations for T=77 K.
A beam of alpha particles produced a current of 10^-14 A in a parallel-plate ionization chamber for 8 s. The chamber contained air at STP (36 ev ip^-1). If the chamber volume was 240 cm^3, what was
A 75.0kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, a vertical height of 4.60m. What is the work done on the man by the
A man pushes a lawn mower on a level lawn with a force of 200 N. If 42% of the force is directed horizontally, how much work is done by the man in pushing the mower 4.8 m?
A 300 g block on a 54 -long string swings in a circle on a horizontal, frictionless table at 75. What is the speed of the block? What is the tension in the string?
A 35.0- battery with negligible internal resistance, a 50.0- resistor, and a 1.25- inductor with negligible resistance are all connected in series with an open switch. The switch is suddenly closed
The force exerted by the wind on the sails of a sailboat is Fsail = 380 N north. The water exerts a force of Fkeel = 200 N east. If the boat (including its crew) has a mass of 260 kg, what are the
A rifle with a barrel length of 60 cm fires a 12 g bullet with a horizontal speed of360 m/s. The bullet strikes a block of wood and penetrates to a depth of 11 cm. How long does it take the bullet t
In a game of billiards, a red billiard ball is traveling in the positive x-direction with speed v and the cue ball is traveling in the negative x-direction with speed 3v when the two balls collide h
A 40.0-N crate starting at rest slides down a rough 6.00-m-long ramp, inclined at 30.0° with the horizontal. The magnitude of the force of friction between the crate and the ramp is 6.0 N. What
The kinetic energy of a rocket is increased by a factor of eight after its engines are fired, whereas its total mass is reduced by half through the burning of fuel. By what factor is the magnitude
A shot-putter throws the shot ( mass = 7.3 {rm kg}) with an initial speed of 15.0 {rm m/s} at a 36.0{rm ^circ} angle to the horizontal. Calculate the horizontal distance traveled by the shot if it
A tiger leaps horizontally from a 7.7 {rm m}-high rock with a speed of 3.0 {rm m/s}. How far from the base of the rock will she land?
Determine the breakdown voltage for an argon filled chamber having electrode separation of 0.3 cm and first Townsend coefficient of 100 cm^-1 at STP. What will be the breakdown voltage if the gas i
By how much vertical distance does the ball clear the crossbar?
A 2.97 kg steel ball strikes a massive wall at 11.7 m/s at an angle of alpha = 67.2° with the plane of the wall. It bounces off with the same speed and angle.If the ball is in contact with the
(a) How much work is required to pull him 70 m up a 30° slope (assumed frictionless) at a constant speed of 1.7 m/s? (b) How what HP moted would be needed.
Two capacitors give an equivalent capacitance of 9.60 pF when connected in parallel and an equivalent capacitance of 1.80 pF when connected in series. What is the capacitance of each capacitor?
Traveling at a speed of 17.6 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.780. What
A beam of 5 MeV electrons passes through a 300 micro-meter thick silicon detector. Estimate the energy lost by the electrons when crossing 100 micro-meter, 200 micro-meter and the full thickness of
Two balls are approaching each other head-on. Their velocities are +9.60 and -10.8 m/s. Determine the velocity of the center of mass of the two balls for the following conditions. (Use the sign of
A 1000 kg steel beam is supported by the two ropes shown in the figure. Each rope can support a maximum sustained tension of 5600 N. Will the ropes break?