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How much money are you going to save if you convince the vendor that your potatoes don't weigh the 10[lb] he says they weigh?
A pool player imparts an impulse of 3.2 N.s to a stationary 0.25 kg cue ball with a cue stick. What is the speed of the ball just after the impact?
A car is traveling at a constant 60 miles per hour. What is its kinetic energy in Joules if its mass is 800 kg? (Remember to convert mph to m/s).
Tin can has a total volume of 1380 cm3 and a mass of 146 g. How many grams of lead shot of density 11.4 g/cm3 could it carry without sinking in water?
Calculate the number of half-wavelengths in a ruby laser operating at a wavelength of 694.3 nm in air, given that the ruby rod, silvered on the ends
During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud - Vground = 1.90 108 V.
An artificial satellite in space has a panel attached to it with dimensions 20m X 25m X 3m. The panel is made of Carbon steel with a carbon content of 1.5%.
A bullet with a mass of 3.00 g, traveling horizontally with a speed of 420 m/s, is fired into a wooden block with mass of 0.840 kg.
An experimental rocket's combustion thrust chamber has an outside (cool) wall temperature of 135° C at the nozzle throat, with a 4500° C chamber temperature
The motor of a ski boat generates an average power of 6.90 104 W when the boat is moving at a constant speed of 15 m/s.
The first part of the argument questions "Why don't we see things left behind by the Earth as it spins and travels around the sun?"
A long straight wire carries a current I. The conduction electrons in the wire have drift speed v and the net charge density of the wire is zero.
The charges are given values Q1 = 5 uC, Q2 = -10 uC, Q3 = 8 uC. You may assume that the distance between charges is in units of cm.
If the mass of the toy car is 3.0 kg, find the average power delivered to the car during its acceleration.
An 800 Vm electric field is directed along the +x-axis. If the potential at x=0m is 2000V, what is the potential at x=2m?
A stunt driver starts his 1500 kg car from rest at A, drives along the deck, and leaves the end of the 15°ramp at a speed of 50 km/h.
Find the rate of energy flow through a copper block of cross-sectional area 15 cm^2 and length 8.0 cm when a temperature difference of 30 degree C
In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 12.0C.
Given: 1. An electric current of 200A is passed through a stainless steel wire having a radius 0.001268m.
The 60-kg rod OA is released from rest when theta = 0 degree. Determine its angular velocity when theta = 45 degree.
A skier wears a jacket filled with goose down that is 15mm thick. Another skier wears a wool sweater that is 5.0mm thick. Both have the same area.
The transfer of heat from the body's interior to the surface is achieved primarily through the flow of blood.
Find a water bill and work out how much water you use in a year and compare this to the amount of water in a foot-acre.
Moves from the origin to the point (0,b), and then goes from (0,b) until (a,b) parallel to the x-axis.
The temperature of a gas stream is measured by a thermocouple whose junction can be approximated as a 1.2mm diameter sphere.