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A circular piece of diameter 8.00 cm is cut from an aluminum sheet at 20o C. If the sheet is then placed in an oven and heated to 150o C. (a) will the hole be larger or smaller? (b) What will the area of the new hole be?
A light ray in air is incident on a water surface at an angle of 27.7? with respect to the normal to the surface. What is the angle of the refracted ray relative to this normal
You are standing 2.5 {rm m} straight in front of one of the two loudspeakers. They are 3 {rm m} apart and both are playing a 686 {rm Hz} tone in phase. As you begin to walk directly away from the speaker, at what distances from the speaker do you ..
A cyclotron is sometimes used for carbon dating. Carbon-14 and carbon-12 ions are obtained from a sample of the material to be dated and are accelerated in the cyclotron. If the cyclotron has a magnetic field of magnitude 2.50 T, what is the diffe..
A conventional mercury thermometer consists of a thin glass capillary filled with mercury. The capillary is enclosed in a protective glass cylinder. These mercury thermometer can be quite sensitive and very precise.
A 2.60-g lead bullet at 28.0°C is fired at a speed of 230 m/s into a large block of ice at 0°C, in which it becomes embedded. What quantity of ice melts
An Olympic basketball player shoots towards a basket that is 5.36m horizontally from her and 3.05m above the floor. The ball leaves her hand 1.83m above the floor at an angle of 45.0o above the horizontal. What initial speed must she give the ball so..
Two cylinders each contain 0.20mol of a diatomic gas at 340K and a pressure of 3.0 atm. What is the final temperature of the gas in the cylinder A
An archer fires an arrow horizontally by pulling the bow string back a distance of 0.47 m before releasing the arrow which has a mass of 0.030 kg, how much work does the archer do on the system
Scientists want to place a 3600.0 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 1.8 times the radius of Mars above the surface of the planet. What is the force of attraction between Mars and the satell..
When a potential difference of 166 V is applied to the plates of an air-filled parallel-plate capacitor, What is the spacing between the plates
a charged particle (q=1.6*10^-19C) enters a mass spectrometer with a speed of 2.5*10^6m/s, compute the mass of the charged particle
A 40-kg projectile leaves a 2000-kg launcher with a speed of400 m/s. What is the recoil speed of the launcher
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