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At some instant the velocity components of an electron moving between two charged parallel plates are vx = m/s and vy = m/s. Suppose that the electric field between the plates is given by = (125 N
A 1 megabit computer memory chip contains many 5.6 x 10-14 F capacitors. Each capacitor has a plate area of 2.4 x 10-11 m2. Determine the plate separation of such a capacitor.
In reaching her destination, a backpacker walks with an average velocity of 1.41 m/s, due west. This average velocity results, because she hikes for 5.02 km with an average velocity of 3.15 m/s due
A uniform electric field of magnitude 380 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.80 cm. (a) What is the work done by the f
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles (helium nuclei, each consisting of 2 protons and 2 neutrons). (a)
A rubber ducky falls from a bridge that is y=41.7 m above the river that passes beneath it. The ducky lands in a model boat, traveling at a constant velocity, that was x=10.9 m from the point of im
Light traveling in air is incident on the surface of a block of plastic at an angle of 72.7° to the normal and is bent so that it makes a 57.1° angle with the normal in the plastic. Find the
A golfer hits her tee-shot due north towards the fairway. Her shot has an initial velocity of 60 m/s. A 15 m/s wind is blowing in a northwesterly direction (45 degrees west of North).
What percent of the original kinetic energy of the bullet is transferred to mechanical energy of the oscillator?
A bell ringer decides to use a bowling ball to ring the bell. he hangs the 7.3kg ball from the end of a 2m long rope. He attaches another rope to the ball to pull the ball back and pulls it horizont
An object is located 9.0 cm in front of a converging lens (f = 6.0cm). Determine (a) distance of the image and (b) the height of the object (c) and the image.
If the temperature coefficient of expansion for brass is 1.9 × 10-5 (C)-1 and the temperature coefficient of expansion for aluminum is 2.4 × 10-5 (C)-1. To what temperature must both be
If this is the only possible means of cooling, how many kilograms of water per hour must be evaporated from an elephant's skin to keep it at a constant temperature?
A projectile is launched from a cannon; it has an initial speed of 58 m/s at an angle of 37 degrees above horizontal. The muzzle of the cannon is 1 meters above the ground. How far down range will t
A copper block is removed from a 306 oven and dropped into 1.30 of water at 20.5. The water quickly reaches 25.9 and then remains at that temperature. What is the mass of the copper block?
120 gr of steam at 102 degree Celsius is pumped into a well insulated container holding 500 gr of H2O (water) at 35.0 degree Celsius. a.) what will be the final temperature of the mixture?
If he couldn't perspire or otherwise cool his body, by how much would his body temperature rise during this exercise?
If the mass per second of oxygen diffusing through a trachea is 1.7 multiplied by 10-12 kg/s, find the oxygen concentration at the interior end of the tube.
(a) showing all of your work and using unity conversion ratios, calculate the work done by the boom on the fireman in units of Btu. (b) if the useful power supplied by the boom to lift the fireman i
A rocket in a fireworks display explodes high in the air. The sound spreads out uniformly in all directions. The intensity of the sound is 4.16 x 10-6 W/m2 at a distance of 130 m from the explosion.
Determine the magnitude and direction of the force applied by the door to the upper hinge and the lower hinge.
A 2.0 kg bicycle wheel with radius of 0.30 m turns at a constant angular speed of 25 rad/s when a 0.30 kg reflector is at a distance of 0.19 m from the axle. What is the angular speed of the wheel w
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. If 7400 J were released in the explosion, how much kinetic energy did each piece acquire?
The space shuttle takes off from Cape Canaveral in Florida and orbits Earth 19 times before landing back at Cape Canaveral 24 hours and 15 minutes later. During this time, it moves in a circular or
A golfer lines up for her first putt at a hole that is 18 m exactly northwest of her ball's location. She hits the ball 18 m and straight, but at the wrong angle, 38 degrees from due north. 1. In o