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An electron, starting from rest, accelerates through a potential difference of 779 V. What is the final de Broglie wavelength of the electron, assuming that its final speed is much less than the speed of light?
submarine on the ocean surface receives a sonar echo indicating an underwater object. The echo comes back at an angle of 20 degree above the horizontal and the echo took 3.04s to get back to the submarine What is the object's depth?
During physic lecture a lone ant makes it way across the classroom floor in two distinct stages starting from the wastebasket, Calculate the magnitude and direction of the ants resultant displacement vector
The box is cubical, measuring 0.390 m on a side, and the thickness of the walls is 3.00 10-2 m. In one day, 2.90 106 J of heat is conducted through the six walls. Find out the thermal conductivity of the box.
The temperature of 1.5 kg of ethanol is 37c. What would the final temperature be if 80 000J of energy as heat is added to the ethanol.
Find out the rate of the wheel's rotation in revolutions per minute that will produce this effect.
You buy an ice cream cone. The cone you are given is filled with melted ice cream of density 1.2g/cm^3. Find the pressure at the bottom of the cone
A 0.245 kg ball is thrown straight up from 1.94 m above the ground. Calculate the total work done by the force of gravity during that time
Suppose you wish to fabricate a uniform wire from 1.60 g of copper. The wire is to have a resistance of R = 0.580 ? and all the copper is to be used, What must be the length of this wire
A car travelling at 19 {rm m/s} runs out of gas while travelling up a 21^circ slope. How far would the car go up the hill before it runs out of gas.
An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass of 1300 kg, What was the speed of the Camaro
If the dummy is thrown forward with force of 130.0 N while simultaneously being hit from the side with a force of 4500.0 N, illustrate what force will the sensor report?
A body of mass M is initially at rest, Find the expression for the instantaneous power delivered to the body as a function of time
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