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Waves on a 10 meter rope travel at 20 m/s. You shake the rope back and forth until you get a standing wave with a single antinode. Shaking it faster, you are able to get another standing wave with two antinodes. What is the wavelength and frequency of each standing wave?
A horizontal wire of length 0.50 m, carrying a current of 6.7 A, is placed in a uniform external magnetic field. When the wire is horizontal, Determine the magnitude of the external magnetic field
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
A hoop and a disk (both of mass 2 kg and radius of 0.3 m) roll without slipping up a straight incline with an initial velocity of 3.2 m/s. What is the maximum gain in height of the hoop
A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.46 m/s. The pulling force is 94 N parallel to the incline, which makes an angle of 20.2° with the horizontal. The coefficient of kinetic friction is 0.400, and the crat..
The electric potential difference across the cell membrane of a human cell is 0.080 V, with the higher potential being outside the cell. How much work must be done by the cell to eject the ion
The brakes of a truck cause it to slow down by applying a retarding force of 4520 N to the truck over a distance of 1150 m
Photons with wavelength 670 nm are capable of producing photoelectrons from a particular substance. Determine the substance's work function and cutoff wavelength
What is the ph of a buffer that results when .40 mol nahco2 is mixed with 100 ml of 2.0 m hcl and diluted with water to 250 ml
A 5.00 kg block carrying a charge Q=60.0?C is connected to a spring for which k=100N/m (see diagram below). The block lies on a frictionless horizontal track, What is the equilibrium position of the block
Block Sliding into Spring A block of mass m = 5.5 kg is released from rest at a height of H = 3.0 m on a curved frictionless ramp. What is the maximum height reached by the block
Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when this photon is emitted
If I have light of three different frequencies, 9.2x10^14 Hz; 6.7x10^14 Hz; 4.7x10^14 Hz that is shined on a metal surface with the observations for each frequency labled A,B, and C as follows:
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