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A 2.0 cm tall object is placed 5.0 cm in front of a +12 diopter lens. What is the linear magnification
A certain camera has f-numbers that range from 1.3 to 5. If the focal length of the lens is 49 mm, what is the range of aperture diameters for the camera
Consider a model thermodynamic system in which the allowed (nondegeerate) energy levels are 0, E, 2E, 3E. Determine how many macrostates are possible
A typical coal-fired power plant has a generating capacity of about 1.3 X 10^9 W of electric power. What is the overall thermal efficiency of the plant
You fly your 20.0m -long spaceship at a speed of c/ 4 relative to your friend. determine the speed of your friend relative to you
A small block with mass 1 kg slides in a vertical circle of radius 0.5 m on the inside of a circular track. how much work is done by the friction force on the block
An audio amplifier, represented by the AC source and the resistor R, what is the time-averaged power delivered to the speaker
A disk with a moment of inertia of 75+1.5 kgm2 rotates at a speed of of 156+5 radians/sec
An electromagnetic wave propagates along the +y direction, If the magnetic field at the origin is along the +x direction, what is the direction of the electric field
A 5mm tall object is placed in front of a thin lens of focal length 4cm. what is the distance of the object from the lens
A bicycle wheel of radius 0.70m is rolling without slipping on a horizontal surface with an angular speed of 4Pi rad/s, What is the tangential deceleration of the bicycle
A massive pulley in the shape of a solid disk is mounted on an axle with negligible friction. What is the mass of the pulley
A very powerful vacuum cleaner has a hose 2.61 cm in diameter. With no nozzle on the hose, what is the weight of the heaviest brick that the cleaner can lift
A skydiver reaches a "terminal velocity" of 120 km/h. If the skydiver has a mass of 59kg, what is the magnitude of the upward force on the skydiver
Plutonium has a half life of 2.4 × 104 years. How long does it take for 99% of the plutonium to decay, What is the binding energy of the 4He nucleus
There are three point charges on the x-axis. One is at the origin and has a charge of 4 coulombs. The second is at 0.2 meters, What is the elctric potential energy of this arrangement
Find the angular velocity of a centrifuge in which a particle 10 cm from the axis of rotation experiences a radial acceleration of 10^3 times g
A block of mass m = 309 g is dragged with a string across a rough horizontal table. The string tension is T = 3.59 N, What is the power supplied by the force of friction
A Cepheid variable has been found to have a period of 22 days, from this its luminosity is determined to be 2.8 x 1029 W, calculate the distance to the Cepheid
A small plane is dropping emergency supplies to a fishing boat that has been blown out to sea. How far from the boat will the supplies land
A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 183 MeV, How many nuclei are in the beam
Atennis ball of mass 5.5*10-2and a speed of 39 M/s strikes a wall at a 45 degree angle, what is the direction of of the balls impuse in relation to the wall
bob whose mass is 36 kg stands at the center of a 200 kg merry-go-round that is spinning at 30 rpm. What is the spinning rate now
Compute the linear momentum and angulat momentum of a Frisbee of mass 0.16 kg. if it has a linear speed 0f 2.0 m/s and an angular velocity of 50 rad/s
During a Carnot cycle, in the first process, an ideal gas is expanded isothermally at 500 K. 1,000 J of heat enters the system, What is the magnitude of Q that leaves the system