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Write the function that describes this wave traveling in the positive x direction. (Use the following as necessary: x and t. x is in meters and t is in seconds.)
An emf is induced in a conducting loop of wire 1.00 m long as its shape is changed from square to circular. Find the average magnitude of the induced emf if the change in shape occurs in 4.40 s and
A heater coil connected to a 240 V ac line has a resistance of 58 . (a) What is the average power used?
How many revolutions per minute is the sample making, if it is located at a radius of 6.45 cm from the axis of rotation?
A spectrum is formed on a screen 30cm from the grating. If a 10mm square hole is cut in the screen, its inner edge being 50mm from the central maximum, what range of wavelengths passes through the h
A small immersion heater can be used in a car to heat a cup of water for coffee or tea. Assume the manufacturer's claim of 60% efficiency. If the heater can heat 140 mL of water from 5°C to 95&
When the lines from a bar magnet are viewed from the end, they appear radially symmetrical. If a loop of wire carrying a current is introduced to the field what direction does it feel the force?
What is the angle of the string with the vertical when the bob reaches its greatest height?
Solid mensuration, An isosceles trapezoid has an area of 40meter sq. And an altitude of 2m its 2 bases have ratio of 2:3 what are the lengths of the bases and one diagonal of the trapezoid
A simple Atwood's machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 5.0 m/s at the end of 2.0 s. At that instant, the kinetic energy of the system is 100 J and e
Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.80 x 106 kg/s. If one third the potential energy of this water were converted to electric energy, how much power would be
A 4.0-kg block slides down a frictionless incline making an angle of 50.0° with the horizontal. (a) What is the total work done on the block when the block slides 1.0 m (measured along the incline
If the box is lifted, at constant acceleration, from rest on the floor to a height of 1.7 m above the floor in 0.42 s, what average power is delivered by the person pulling on the rope?
White light reflected at a perpendicular incidence from a soap film has, in the visible spectrum, an interference maximum of 600nm and a minimum at 450nm with no minimum in between. If n= 1.33 for
When a 420 gram mass is attached to a spring, it oscillates with a period of 0.350 s. If instead, a different mass m2 is attached to the same spring, it oscillates with a period of 0.700 s. a) Find
A 0.144 kg baseball is moving towards home plate with a speed of 43.0 m/s when it is bunted. The bat exerts an average force of 6.50 x 10^3 N on the ball for 1.30 ms. The average force is directed t
A 1.70 kg block and a spring with a force constant of 955 N/m are oriented vertically as shown below. Initially the spring is compressed 4.60 cm and the block is held at rest. When the block is rele
There is an electric field 519N/C in the positive y direction and a magnetic field of 0.319 mT directed out of the screen. Directions and forces of these fields do not change . what is the magnitude
Two identical charges are fixed to diagonally opposite corners of a square, 0.5m on the side. Each charge is 3x10^-9c How much work is done by the electric force if one of the charges is moved to an
The magnetic field is in the negative x direction and has a magnitude of 2.47 mT. At one instant the velocity of the proton is in the positive y direction and has a magnitude of 2560 m/s. At that in
What is the magnitude of the vertical component of Earth's field at this location? Does the measured voltage change as the system moves from one location to another? Explain.
A parallel-plate capacitor has capacitance 0.50µF. (a) How much energy is stored in the capacitor if it is connected to a 9.00V battery?
Calculate the velocity of the target ball after the collision. Calculate the mass of the target ball.
Two billiard balls of equal mass undergo a perfectly elastic head-on collision. If one ball's initial speed was 2.50 m/s , and the other's was 4.30 m/s in the opposite direction, what will be their
A container has 2.0 litres of oxygen gas at 0 degrees Celsius and 1.0 atm pressure a) how many moles of oxygen does it contain? b) how many moles of oxygen are in the container?