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(a) Assume a meter stick made of steel and one made of invar are the same length at 0°C. Find what is their difference in length at 36°C?
mm
(b) Repeat the calculation for two 34 meter long surveyor's tapes.
A stamp collector is viewing a stamp by a magnifying glass held next to her eye. Her near point is 25 cm from her eye.(a) What is the refractive power of a magnifying glass that has an angular magnification of 5.2 when the image of the stamp is locat..
A 6.0-uF air capacitor is connected across a 100-V battery. Afterthe battery fully charges the capacitor, the capacitor is immersed in transformer oil (dielectricconstant = 4.5).
A square loop of side a centered at the origin in the xy plane carries current counter clockwise as view from above (from positions with z > 0). What is the net force and net torque on the loop
A friend is standing on a giant skateboard that is initially at rest. If you avoid frictional effects with the floor, what is the momentum of the skateboard if your friend walks to the right on skateboard with a momentum of 150 kg.m/s? What is the..
four standing wave segments or loops are observed on a string fixed at both ends as it vibrates at a frequency of 140
In 2.0 minutes, a ski lift raises six skiers at constant speed to a height of 175 m. The average mass of each skier is 65 kg. Illustrate what is the average power provided by the tension in the cable pulling the lift?
1. which unit would you most likely use to measure the difference between the elevation of an airplane in flight and
A large wooden crate is pushed along a smooth, frictionless surface by a force of 100N. The acceleration of the crate is measured to be 2.5 m/s2. What is the mass of the crate?
Three point charges have equal magnitudes, two being positiveand one negative. These charges are fixed to the corners of anequilateral triangle, as the drawing shows. The magnitude of eachof the charges is 5.5 μC, and the lengths of the sides of t..
An airplane pilot wishes to fly due west. A wind of 70.0 km/h is blowing toward the south. What is the speed of the plane over the ground
An electron in Thomson's apparatus moves perpendicular to a B-field along a path of radius12.15 cm. If imposition of an E-field of 18.90 mkV makes the path straight, find B.
An old-fashioned single-play vinyl record rotates on a turntable at 45.0 rpm. Determine what the angular velocity
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