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Two 100 N forces pull on a 50kg mass. One of the forces pulls to the right and the other pulls 90 degrees from the first force. What is the net acceleration of the mass?
Photorefractive keratectomy (PRK) is a laser-based surgery process that corrects near- and farsightedness by removing part of the lens of the eye to change its curvature and hence focal length. What is the energy of a single photon
An air traffic controller has two aircraft on radar. The first is at an altitude of 0.5 km, a horizontal distance of 3 km measured along the ground to the point directly underneath the plane, and a bearing of 115° west of north.
What least amount heat is needed to bring 20-g of water at 20C to the boiling point and completely boil it away.
Assume that the earth is a uniform density spherical mass. (This assumption is not correct but we will use it for simplicity in working the problem.)
If you touch the terminal of a battery, What current will pass through your body if you touch the two terminals of a 9.0 V battery with your two hands
A uniform rectangular bookcase of height 1.63 m and width 1.03 m is to be pushed at a constant velocity across a level floor. The bookcase is pushed horizontally at its top edge, at the distance H above the floor.
Four particles with masses 9kg, 4kg, 9kg, and 3kg are associated by rigid rods of negligible mass as shown. Assume the system rotates in the yz plane about the x axis with an angular speed of 9 rad/s. Find out the moment of inertia of the system a..
A 315 kg sailboat has an acceleration of 0.72 m/s2 at an angle of 33° north of east. compute direction of the net force that acts on the sailboat
In an experimental set-up, where a wire with a linear mass density of 1 g/m was clamped at one end, at what frequency would you need to vibrate the wire
A hypodermic syringe has a piston area of 0.5 cm^2 and a needle with circular opening of diameter 0.2 mm. What is the gauge pressure in the syringe while pushing the piston with 1 N of force
A car traveling 56.1 km/h is 24.6 m from a barrier when the driver slams on the brakes. The car hits the barrier 1.72 s later. (a) What is the car's constant deceleration magnitude before impact? (b) How fast is the car traveling at impact?
A 0.300-kg puck, initially at rest on a horizontal, frictionless surface, Determine the velocity of the 0.300-kg puck after the collision
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