Physics Electrostatics Level: Misc Level
What capacitance should a capacitor have if it is to store 3x 10-3 joules of energy when connected to a 12 volt battery?
Physics Work,Power & Energy Level: Misc Level
A 40 kg mass rests on one end of a teeter-totter. A 300 kg mass is dropped from a height of 10 meters and strikes the other end of the teeter-totter. If 40% of the larger block,s energy is transferred via the teeter-totter to the small mass, what is the height to which the small mass rises?
Physics Work,Power & Energy Level: Misc Level
How high is a waterfall if 300 kg of water acquires a kinetic energy of 400,000 joules by falling from the top of the waterfall to the ground?
Physics Electrostatics Level: Misc Level
An electrical capacitor of 1.5 micro-farands is connected to a 6 volt battery. How much potential energy is stored in the capacitor?
Physics Work,Power & Energy Level: Misc Level
An automobile weighing 2800 Ibs. is traveling 55MPH. What is the kinetic energy and what would be the speed of the atomobile if the kinetic energy were doubled?
Physics Force & Laws Of Motion Level: Misc Level
A 0.50-kg bomb is sliding along an icy pond (frictionless surface) with a velocity of 2.0 m/s to the west The bomb explodes into two pieces. After the explosion, a 0.20 kg piece moves south at 4.0 m/s What are the components of the velocity of the 0..30 kg piece?
Physics Work,Power & Energy Level: Misc Level
A 3.0-kg cart moving to the right with a speed of 1.0 m/s has a head on collision with a 5.0-kg cart that is initially moving to the left with a speed of 2 m/s.After the collision, 3.0-kg cart is moving to the with a speed of 1 m/s. What is the final velocitty of the 5.0-kg cart?
Physics Work,Power & Energy Level: Misc Level
Two objects of equal mass traveling toward each other with equal speeds undergo a head on collision. wich one of the following statements is necessarily true? They will exchange velocities Their velocities will be reduced Their velocities will be unchanged Their velocities will be zero Their velocities may be zero
Physics Work,Power & Energy Level: Misc Level
Two objects of equal mass traveling toward each other with equal speeds undergo a head on collision. wich one of the following statements is necessarily true? They will exchange velocities Their velocities will be reduced Their velocities will be unchanged Their velocities will be zero Their velocities may be zero
Physics Work,Power & Energy Level: Misc Level
Which one has the largest kinetic energy? a rain drop a woman swimming a jet airplane flying at maximum speed the earth moving in its orbit around the sun the space shuttle orbiting earth
Physics Gravitation Level: Misc Level
Callisto and Io are two Jupiter moons. The distance from Callisto to the center of Jupiter is approximately 4.5 times as far as Io. How does Callisto,s orbital period, Tc, compare to that of Io, Ti?
Tc=4.5 Ti
Tc=21 Ti
Tc=9.5 Ti
Tc=0.2 Ti
Tc=2.7 Ti
Physics Kinematics Level: Misc Level
A 10-kg is set moving with a constant speed of 6 m/s on a rough horizontal surface If the force of friction is 20 N, approximately how far does the block travels before it stops?
Physics Properties Of Matter Level: Misc Level
A cable stretches by an amount d when it supports a crate of mass M.
The cable is cut in half.What is the mass of the load that can be supported by either half of the cable if the cable stretches by an amount d?
a)M/4
b)M/2
c)M
d)2M
e) 4M
Physics Work,Power & Energy Level: Misc Level
A spring required a force of 1.oN to compress it 0.1m.How much work is required to stretch the spring to 0.4 m?
Physics Waves And Oscillations Level: Misc Level
The position of a simple harmonic oscillator is given by x (t)=(0.5m) cos(πt/3) where t is in seconds. what is the period of the oscillator?
