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A microwave oven generates electromagnectic waves of frequency2.45 GHz. The microwaves enter the oven and are reflected by the walls. The standing-wave pattern produced in the oven leaves hotspots (burns) on the food if no turntable is used. The separationdistance between the burns is 6.00cm. Calculate the speed of the micro waves from these data.
A 2.00g bullet strikes a 2.00kg block hanging from a long cord. Find the velocity of the bullet before it collides with the block
An airplane moves at 120 m/sec to the west with respect to the air. How fast does the airplane move
A freight train has a mass of 1.5 × 107 kg. If the locomotive can exert a constant pull of 7.9 × 105 N, how long does it take to increase the speed of the train from rest to 88 km/h
2.90 mol of gas is at a temperature of -180 C and fills a 3.90 L container. What is the gas pressure
q1. charge is scattered uniformly throughout a long cylindrical shell of inner radius r and out radius 2r. at what
A car is traveling at 66.2 mph. The driver applies the brakes and the car decelerates at 1.3 m/s2. What is the stopping distance
A 27.78 cm diameter cylinder that is 39.07 cm long containes 59.46 g of oxigen gas at 22°C. How many moles of oxigen are in the cylinder
A dipole moment is placed in a uniform electric field oriented along an unknown direction. The maximum torque applied to the dipole is equal to 0.1 N.m. When the dipole reaches equilibrium its potential energy is equal to -0.2 J.
find the time rocket reaches the peak height of trajectory.
how much tension must a cable withstand if it is used to accelerate a 20.0 kg car vertically upward at 0.70 m/s^2
After impact, the block slides 7.5 m before coming to rest. If the coefficient of kinetic friction between block and surface is 0.650, illustrate what was the speed of the bullet immediately before impact?
Your medieval history class is constructing a trebuchet, a catapult-like weapon for hurling stones at enemy castles, Find an expression for the angle that will maximize the range of a projectile launched with speed from height above level ground
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