1. A 20 horsepower engine is used to lift gravel from the ground to the top of a building 60 ft high. Neglecting loss of energy due to friction, how many tons of gravel can be lifted in 50 minutes? 1 hp = 33.000 ft-lb per minute 1 ton = 2000 lb 2.The engines of an airplane exerts a force of 4,000 lb when traveling with a constant velocity of 300 mi/hr. How much horsepower is delivered?

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Q: Data and Results Initial Length Initial reading of micrometer caliper Final reading of micrometer ca...

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Q: The molecular diameter of helium, He, is 0.225 nm. At 0 °C and 101.325 kPa, calculate the

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Q: Activity: Stand straight with your heels, back, and head against a wall. Bend forward from your wais...

A:   When you are standing against a wall or otherwise the centre  of gravity, (the point through which...

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Q: a car covers 40 m in 9.45 s  while uniformly slowing down to a final velocity of 2.5 m/s a) find the...

A: Solution: Given that d = 40 m t = 9.45 s final velcity v =2.5 m/s

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Q: Miles wants to chase a truck that is going at a speed of 25.0 kph, and thus starts accelerating from...

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Q: is thrown at an angle of 30 degrees relative to the horizontal direction. If its horizontal speed is...

A: Given Initial horizontal speed ux  = 10 m/s  Angle of projection= 300 

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Q: A uniform electric field with 500 N/C is parallel to a flat square area of 115 m². the electric flux

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Q: Three blocks are connected on the table as shown below. The coefficient of kinetic friction between ...

A: Given: Mass of object 1 m1=4.25 kg Mass of object 2 m2=1.2 kg Mass of object  m3=2.4 kg

Q: A 5.0 kg block is dragged over a rough horizontal surface by a constant force of 22 N at an angle of...

A: Calculate the acceleration of the block due to the applied force. v2-u2=2aSa=v2-u22S=6.0 m/s2-4.0 m/...

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A: SOlution: length of iron bar L =1 km=1000 m

Q: 5. Two liquids of different densities (P, = 1250 kg/m³, p2 = 420 kg/m³) are poured together into a 1...

A: density of first liquid = 1250 kgm3density of second liquid = 420 kgm3total volume = 125 L density o...

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Q: A brick is thrown at an angle of 30 degrees relative to the horizontal direction. If its horizontal ...

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Q: 2. A conducting sphere of radius 0.01 m has a charge of 1.0 × 10^- 9 C deposited on it. What is the ...

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Q: A block weighing 400 N is pulled along a level from at a constant speed by a rope which makes 40° wi...

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Q: Sean the Swan is resting on a frictionless surface (see below) and is attached to a spring that is i...

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Q: Consider a ball thrown horizontally (neglecting air resistance). Explain why the horizontal componen...

A: Given A ball is thrown horizontally and air resistance is negligible.