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A 5.00-g lead bullet is traveling at a speed of 348 m/s when it embeds in a wood post. What is the kinetic energy bullet before it hits the post?
A cart loaded with bricks has a total mass of 20 kg and is pulled at constant speed by a rope. How much work is done on the cart by the rope
You measure the length of the same side of a block five times and find: b=12.0, 11.7, 12.2, 11.9 and 11.8 mm. What is the best estimate for the uncertainty in b? The amount of average 11.92 is wrong.
Match the situation listed in (a)-(b) to the proper kind of errors: A- Random Error. B- Systematic Error. C- Correction. D- Mistake.
a boat has a mass of 7920 kg. its engines generate a drive force of 3070 n due west while the wind exerts a force of
A microwave oven is powered by an electron tube called a magnetron that generates electromagnetic waves of frequency 2.25 GHz, Calculate the speed of the microwaves from these data.
You see the boy next door trying to push a crate down the sidewalk. He can barely keep it moving, and his feet occasionally slip. Estimate the mass of the crate
What is the moment of inertia of flywheel
What is the electric potential at point D? What is the magnitude of the electric field at point B?
Consider a heat exchanger. Air is used to heat the liquid water. The entering air temperature is 350deg C and entering water temperature is 20degC. The water is heated to saturated vapor at 1.5MPa. The mass flow rate of air and water are 30kg/min ..
What is the net torque about the origin on a flea located at coordinates (0 m,-8 m, 4 m) when forces F1 = ( 3 N) k and F2 = (-2 N) j act on the flea? i-component of torque?
On a very muddy football field, a 117 kilogram linebacker tackles an 86 kilogram half back. Find what is the velocity at which the two players move together immediately after the collision
A pilot flies out of Cleveland and sets the compass of the plane due north. The pilot maintains an airspeed of 250km/h. After flying for 30 minutes the pilot finds that the plane is 200km north and 40 km west of the starting point. What is the vel..
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