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In a swimming pool, it is observed that the wave speed of ripples along the surface is 0.87 meter per second. Obtain the wavelength of the waves you create in a swimming pool if you splash your hand at a rate of 2.55 Hertz?
An ac series circuit has an impedance of 196 ? , and the phase angle between the current and the voltage of the generator is ? = -72°. The circuit contains a resistor and either a capacitor or an inductor
What is the maximum speed the car can have at point B for the gravitational force to hold it on the track.
In a photoelectric-effect experiment, the maximum kinetic energy of electrons is 3.2eV . When the wavelength of the light is increased by 50% , What is the work function of the cathode
The driver of a motorboat that can move at 10 m/s wishes to travel directly across a narrow strait in which the current flows at 5 m/s. At what angle upstream should the driver head the boat
Laser light of wavelength 632.8 nm falls normally on a slit that is 0.0250 mm wide. The transmitted light is viewed on a distant screen where the intensity at the center of the central bright fringe is 8.50 W/m2.
A 3 kg block initially traveling at 5 m/s collides with a 1 kg block (initially at rest) sitting near the base of a hill. how high up the hill do the two blocks slide after the collision
A cubical block of ice 46.0 cm on a side is placed on a level floor over a speck of dust. Discover the location of the image of the speck as viewed from above. The index of refraction of ice is 1.309.
A box of 20 kg is pushed up a 15 degree frictionless incline plane at a uniform speed. The applied force on the box is directed at a 20 degree angle from the horizontal. Draw a force diagram for the box.
a small ball bearing is illuminated with blue light from an argon ion laser (4880 A.) What is the diameter of the ball bearing
In a circus performance, a large 5.0-kg hoop of radius 3.0 m rolls without slipping. If the hoop is given an angular speed of 3.0rad/s while rolling on the horizontal and allowed to roll up a rampinclined at 20 degrees with the horizontal, how far..
Assume that a light bulb is a 60.0 W bulb with a resistance of240 Ω. The magnetic field has a magnitude of 0.40 T, and the length of the rod is 0.60 m. The only resistance in the circuit is that due to the bulb.
A firefighter at a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as shown in Figure. If the initial speed of the stream is vi. At what height h does the water strike the building?
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