The same force F is applied to the edge of two hoops as the drawing below shows The hoops have the same mass whereas the radius of the larger hoop is twice the radius of the smaller one The entire...

4 (Try more)The sum of the surface areas of two spheres are 500 cm2 If the radius of the larger sphere is twice of that of the smaller sphere find the radius of the smaller sphere

3 8 Two objects with different sizes masses and temperatures are placed in thermal contact in which direction does heat energy flow A From the larger object to the smaller object B From the object with more mass to the one with less mass C From the object with less mass to the one with more mass D From the object at higher temperature to the object at lower temperature 9 According to the first law of thermodynamics the internal energy of an ideal gas A increases as the temperature decreases with fixed volume B increases as the temperature increases with fixed volume C shows no change when the temperature increases with fixed volume D shows no change when th B Pendulum B is twice as long as A C Pendulum B is twice as massive as A D The mass of B is four times the mass of A 11 If the amplitude of a mass-spring harmonic oscillator is doubled without changing its mass the mechanical energy of the system A increases by a factor of two B increases by a factor of three C increases by a factor of four D remains the same 12 Two isolated charges +q and -2 q are 2 centimeters apart If F is the magnitude of the force acting on charge -2 q what are the magnitude and direction of the force acting on charge +q A 2 F away from charge -2 q B F toward charge -2 q C F away from charge -2 q D 2 F toward charge -2 q 13 Two isolated charges Q and q attract each other with a force F If the separation between thes charges were reduced by half then each charge would experience a force of magnitude A 2 F / 3 B 2 F C F / 2 D 4 F

3 Two objects with different sizes masses and temperatures are placed in thermal contact in which direction does heat energy flow A From the larger object to the smaller object B From the object with more mass to the one with less mass C From the object with less mass to the one with more mass D From the ubject at higher temperature to the object at lower temperature 9 According to the first law of thermodynamics the internal energy of an ideal gas A increases as the temperature decreases with fixed volume B increases as the temperature increases with fixed volume C shows no change when the temperature increases with fixed volume D shows no change when the temperature decreases with fixed volume 10 Simple pendulum A swings back and forth at twice the frequency of simple pendulum B Which of the following statements is correct A The length of B is four times the length of A B Pendulum B is twice as long as A C Pendulum B is twice as massive as A D The mass of B is four times the mass of A 11 If the amplitude of a mass-spring harmonic oscillator is doubled without changing its mass the mechanical energy of the system A increases by a factor of two B increases by a factor of three C increases by a factor of four D remains the same 12 Two isolated charges +q and -2 q are 2 centimeters apart If F is the magnitude of the force acting on charge -2 q what are the magnitude and direction of the force acting on charge +q A 2 F away from charge -2 q B F toward charge -2 q C F away from charge -2 q D 2 F toward charge -2 q 13 Two isolated charges Q and q attract each other with a force F If the separation between th charges were reduced by half then each charge would experience a force of magnitude A 2 F / 3 B 2 F C F / 2 D 4 F

Two circular holes one larger than the other are cut in the side of a large water tank whose top is open to the atmosphere The center of one of these holes is located twice as far beneath the surface of the water as the other The volume flow rate of the water coming out of the holes is the same (a) Decide which hole is located nearest the surface of the water (b) Calculate the ratio of the radius of the larger hole to the radius of the smaller hole