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A hiker, who weighs 810 Newton, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 3850 Newton, and rests on two concrete supports, one on each end. He stops 1/5 of the way along the bridge. Find the magnitude of the force that a concrete support exerts on the bridge
(a) at the near end and
(b) at the far end?
q1. water flows over victoria falls which is 128 m high at an average rate of 1.6 times 106 kgs. the acceleration of
some types of glass have a range of indices of refraction of about 1.4 to 1.7. What is the range of the polarizing angle
There is a clever kitchen gadget for drying lettuce leaves after you wash them. find the magnitude of the centripetal acceleration at the outer wall
An automobile has a total mass of 1600kg. It accelerates from rest to 30km/h in 40 s. evaluate the total kinetic energy of the automobile
The intensity of the sunlight that reaches Earth's upper atmosphere is approximately 1410 W/m2. What is the average energy density
The temperature difference between the inside and the outside of a home on a cold winter day is 49°F. Express this difference on the Celsius scale.
A rifle with a weight of 25 N fires a 4.0-g bullet with a speed of 240 m/s. Find the recoil speed of the rifle
for a double-slit experiment the inside edges of two 1.65-mm wide slits are separated by a distance of 1.31 mm. the
Decreasing the resistance of an ammeter's shunt resistance a.) allows it to measure a larger current at full scale deflection. b.) converts it to a voltmeter. c.) allows it to measure a smaller current at full scale deflection. d.) enables more curre..
Determine the mass of a 4.6 meter beam, if it is balanced on a fulcrum 2.16 meters from the left end. A 820 N man stands on the very left end, and a 360 N girl stands on the right end. (in kg)
The primary coil of a transformer has N1 = 250 turns, and its secondary coil has N2 = 1500 turns. what rms voltage is developed across the secondary coil
The microwave radiation left over from the Big Bang explosion of the universe has an average energy density of 3.87 Ã- 10â€"14 J/m3
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