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Plot the induced emf vs. the cosine of the tilt angle, including error bars for the cosine of the angle. Also, put a theoretical curve on the graph.
A circular wire loop of radius 0.50 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.40 T. If in 0.10 s the wire is reshaped from a circle to a square, but remains in the
Bernoulli"s principle provides lift to airplane wings and soaring birds. You might want to ask about this one in class. How does Bernoullis principle apply to the flight of airplanes?
Choose one of the means of providing social support listed below. Describe how this type of social support is important and how it might help an ill person. Read the post of a student who chose a di
A horse canters away from its trainer in a straight line, moving 120 m away in 15.0 s. It then turns abruptly and gallops halfway back in 5.0 s.
A 295 kg piano slides 4.2 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. C
How much heat must be added to the water to raise its temperature from 20.0C to 80.0C? B) How much time is required?
A spring is standing upright on a table with its bottom end fastened to the table. A block is dropped from a height 3.0 cm above the top of the spring. The block sticks to the top end of the spring
As a 14,500 kg jet plane lands on an aircraft carrier, its tail hook snags a cable to slow it down. The cable is attached to a spring with spring constant 58,800 N/m. If the spring stretches 26 m to
What is the speed of the bullet when it exits the block? Is the final kinetic energy of this system equal to, less than, or greater than the initial kinetic energy?
A ball is thrown upward form the ground with an initial speed of 25 m/s; at the same instant another ball is dropped from a building at 15 m high. After how long will the balls be at the same height
A baseball player hits a ball towards the outfield with an initial velocity of 76.0 m/s at an angle of 45.0 relative to the ground. The outfield is 118 m away and is 4.0 m tall. a) Does the ball cle
The electric field inside a 55cm-long copper wire is 1.1×10^-2 V/m. What is the potential difference between the ends of the wire?
Two identical piano wires have a fundamental frequency of 550 Hz when kept under the same tension. What fractional increase in the tension of one wire will lead to the occurrence of 2 beats/s when b
What is the force between two balloons with a negative charge of 1.6 if the ballons are 5.0cm apart?
A 3.0 kg toy car can move along an x axis; Figure gives Fx of the force acting on the car, which begins at rest at time t=0. The scale on the Fx axis is set by Fxs = 4.0 N. In unit-vector notation,
A sample of a particular radioisotope is placed near a Geiger counter, Eight hours later the detector counts at a rate of 10 counts per minute. What is the half-life of the material?
A stationary motion detector sends sound waves of 0.375 MHz toward a truck approaching at a speed of 35.0 m/s. The speed of sound in the air is 343 m/s. What is the frequency of the waves reflected
A rectangular block of ice 9 m on each side and 1.6 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. How many penguins of mass 22 kg can stan
If a spring stretches by 2.0 cm when 15.0 N tensile forces are applied at its ends, what is the spring constant of the spring?
If you wanted to move an electron from the positive to the negative terminal of a 12V the battery, how much work would you need to do on the electron?
A 10 kg bullet is fired horizontally into a 300g wooden block initially at res on a horizontal surface andbecome embedded in it. The coefficient of friction between block and surface is (0.50). The
Initially unpolarized light is sent through three polarizing sheets whose polarizing directions make angles of 1 = 40, 2 = 20, and 3 = 40 with the direction of the y-axis.
You push a 1.8 kg block against a horizontal spring, compressing the spring by 26 cm. Then you release the block, and the spring sends it sliding across a tabletop. It stops 90 cm from where you re