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Suppose this electron is moving in a circular orbit of radius 0.32 nm (3.2 x 10-10 m) and the force that makes this circular motion possible is the electric force exerted by the proton on the electro
The spring constant is 27 N/m. When the ice cube is released, what distance will it travel up the slope before reversing direction?
In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 22 cm, the ball travels horizontally 5.2 m and lands on the floor 1.5 m bel
With what minimum speed must you toss a 190 g ball straight up to hit the 10 m-high roof of the gymnasium if you release the ball 1.3 m above the ground? Solve this problem using energy. With what
A 55 g particle is moving to the left at 11 m/s. How much work must be done on the particle to cause it to move to the right at 41 m/s?
How much heat is extracted from the cold reservoir per cycle? (in J) Express your answer using two significant figures.
A Carnot engine with a hot-reservoir temperature of 380 degree C has the same thermal efficiency. What is the cold-reservoir temperature in degree C.
If you had one of the proton , in a uniform electric field, in a vacuum chamber near the earth's surface (so that you cannot ignore gravity), what electric field would be required to give the partic
A newly proposed device for generating electricity from the sun is a heat engine in which the hot reservoir is created by focusing sunlight on a small spot on one side of the engine. The cold reserv
Assume the room temperature is 20°C. A) What is the highest frequency heard by a student in the classroom? (in Hz) B) What is the lowest frequency heard by a student in the classroom? (in Hz)
On the other hand, if the red car has a constant velocity of 42.0 km/h, they pass each other at x = 76.0 m. What are (a) the initial velocity (in km/h)
A taut rope has a mass of0.165kg and a length of3.80m. What power must be supplied to the rope in order to generate sinusoidal waves having an amplitude of0.100m and a wavelength of0.520m and trave
What is the net displacement of an element at a point on the string where two pulses are crossing, if the string is rigidly attached to the post?
A speaker at an open-air concert emits 600 W of sound power, radiated equally in all directions. What is the intensity of the sound 5.50 m from of the speaker?
A 60 kg skier leaves the end of a ski-jump ramp with a velocity of 24 m/s directed 25 degrees above the horizontal.
What is the change in the gravitational potential energy of the snowball-Earth system during the flight?
A krypton laser produces a cylindrical red laser beam 2.0 mm in diameter with 2.0 W of power. What is the light intensity on a wall 2.4 m away from the laser?
The element heats up to 785° C, with the potential difference constant. Find the final current. (The temperature coefficient of resistivity of Nichrome is 4.0 10-4 (°C)-1.)
When traveling at 1.50 m/s, you notice that exactly two waves are hitting the boat from behind every 14.0 s. What is the speed of the waves on the lake? (in m/s)
A female orb spider has a mass of 0.45 g. She is suspended from a tree branch by a 1.2 m length of 0.0020mm diameter silk. Spider silk has a density of 1300 kg/m^3. If you tap the branch and send a
Particles in a Gold Ring. You have a pure (24-karat) gold ring with mass 15.0 g. Gold has an atomic mass of 197 g/mol and an atomic number of 79. How many protons are in the ring?
An electron in an oscilloscope is accelerated as a result of the potential difference between the cathode and anode. The electron has negligible initial speed and a final speed of 2.90 x 107 m/s. F
Find the capacitance for a cylindrical jar of height 18 cm and radius 6 cm, made of 1 mm thick Pyrex glass. (The dielectric strength of the Pyrex glass is 1.00 107 V/m.)
Assume that the rate of charge flow in a lightning bolt is about 16000 C/s and this lasts for 105 µs or less. How much charge flows between the ground and the cloud in this time?
A rock climber stands on top of a 52 m high cliff overhanging a pool of water. He throws two stones vertically downward 1.0 s apart and observes that they cause a single splash. The initial speed of