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Q. Starting from rest, a boat increases its speed to 4.07 m/s with constant acceleration.
What is the boat's average speed?
If it takes the boat 4.67 s to reach this speed, how far has it traveled?
Q. When a high-speed passenger train traveling at 101 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 671 m ahead. The locomotive is moving at 25 km/h. The engineer of the high-speed train immediately applies the brakes. What must be the magnitude of the resulting constant deceleration if a collision is to be just avoided.
Find out (a) capacitance and (b) maximum voltage that can be applied to a Teflon-filled parallel- plate capacitor having a plate area of 175 cm2 and an insulation thickness of 0.040 mm.
Two point charges Q1=+5.00 nC and Q2= -3.00 nC are separated by 35.0cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic si..
The stairs are 83 long and inclined at the angle of 31. If a player has a mass of 87, estimate his average power output on the way up. Overlook friction and air resistance.
A wooden raft has a mass of 65 kg. When empty it floats in water (density 1000 kg/m3) with 41percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
What is the mass of sculpture (in kg) assume that the local acceleration due to gravity is 9.80 m/s2.
A grinding wheel of radius 0.35 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75N · m. Find the magnitude of the friction force.
Now the gymnast (not holding any additional mass) walks directly above right support. What is the force the left support exerts on beam.
A certain type of laser emits light that has a frequency of 5.2 x 10^14 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.7 x 10-11 s. How many wavelengths are there in one pulse.
How thick should the air layer be between two flat glass surfaces if the glass is to appear bright when 530 light is incident normally.
What is the largest wavelength that will give constructive interference at an observation point 171 from one source and 295 from the other source.
What is the minimal mass of helium (density 0.18) needed to lift a balloon carrying two people in a basket, if the total mass of people, basket, and balloon (but not gas) is 320.
The basic concepts in optics.
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