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The nearpoint of an eye is 151 cm. A corrective lens is to be used to allow this eye to clearly focus on objects 25 cm in front of it. Part 1) What should be the focal length of this lens?
What is the y-component of the magnetic force on the first particle due to the second?
Two parallel sheets of aluminum foil separated by 0.1 mm are connected to a 9-V battery. The area of each sheet is 0.5 sq. m. (a) Find the electric field between the aluminum sheets.
At what times will the other plate of the capacitor have maximum positive charge?
Assuming the friction force is constant, determine how much time elapses between the moment the bullet enters the tree and the moment it stops moving.
What is the net work done on the particle by external forces as it moves from (A)to(B) ?
A raindrop of mass 3.06*10e5 kg falls vertically at constant speed under the influence of gravity and air resistance. Model the drop as a particle. (a) As it falls 105 m, what is the work done on th
A skydiver of mass 83.0 kg jumps from a slow-moving aircraft and reaches a terminal speed of 54.9 m/s. (a) What is her acceleration when her speed is 30.0 m/s?
A 10-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 10 m/s, determine (a) the translational kinetic energy of its center of gravity, (
A man weighing 750 N and a woman weighing 480 N have the same momentum. What is the ratio of the man's kinetic energy to that of the woman ?
A 1500 wrecking ball hangs from a 18 -long cable. The ball is pulled back until the cable makes an angle of 29.0 with the vertical. By how much has the gravitational potential energy of the ball cha
What power output must the heart have to do this task once a minute?
The second disk , with a rotational inertia of 4.092 kg-m^2 about its central axis, is initially spinning at a rate of 684 rpm in the same direction as the first one. They then couple together a) Wh
The small sphere starts at the top from rest . What normal force does it exert on the hemisphere at the bottom? Hint: first express its kinetic energy at the bottom in terms of its linear velocity t
At the right end the track is horizontal and vertically at a height h = 27.6m above a point A on the horizontal floor. Determine the ball's striking distance from A.
Suppose that the turntable achieved its angular speed by starting from rest and undergoing a constant angular acceleration for 0.345s. Calculate the minimum coefficient of static friction required f
Your bathtub has 82 liters of water in it, but it has cooled down to a temperature of 39 degrees celsius. How much 50 degrees celsius water must you add to the tub to make your bathwater the perfect
If the loop is placed in a uniform magnetic field of magnitude 0.400 T, what is the maximum torque that can act on it? The resistivity of copper is 1.7 x 10-8 m.
What is the potential difference across the headlight bulbs when they are the only load on the battery?
(a) Find the speed of the disk's center of mass when it reaches the bottom of the ramp. (b) Find the angular speed of the disk at the bottom of the ramp.
What constant force would have to be exerted on the rope to bring the merry-go-round from rest to an angular speed of 0.500 rev/s in 2.00 s?
Suppose a cube of aluminum which is 1.00 cm on a side accumulates a net charge of +2.70 pC. (a) What percentage of the electrons originally in the cube was removed?
Assume the conduction electrons in a metal can be treated as classical particles in an ideal gas. a) What is the rms velocity of electrons in room temperature copper?
A 62g hollow copper cylinder is 10cm long and has an inner diameter of 1.0cm. The current density along the length of the cylinder is 150,000 A/m2. What is the current in the cylinder?
A thin slab of charge (length L, width W, and surface charge density σ) lies along the x-y plane. Supose you want to calculate the electric field at the point z above the origin. Show me the e