06/09/20

An elevator motor provides 45.0 kW of power while lifting an elevator 35.0 m. If the elevator contains seven passengers each with an average mass of 70.0 kg and it takes 20.0 s to accomplish this task
a) Draw a diagram.b) States the formulas and givensc) Determine the mass of the elevator.
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06/08/20

HELP PLEASE! ASAP
A Nichrome heater dissipates 501.6 W when the applied potential difference is 110 V andthe wire temperature is 800°C. Find the dissipation rate (power) assuming the wire temperaturewas held at... more
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06/08/20

HELP ME OUT PLEASE ASAP

A potential difference of 1.2 V will be applied to a 33 m length of 18-gauge copper wirewith a radius of 0.508 mm. Calculate (I) the current, (II) the magnitude of the current density,(III) the... more
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06/08/20

Driving down the highway you see a truck that has a mass of 3250 kg. If you are told the force of friction is 1500 N, what is the coefficient of friction? What is the acceleration of the truck?
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06/08/20

A leaf frozen into a pond in winter is 53 mm below the surface of the ice. How far down does the leaf seem to be? (nice = 1.31). Round your answer to the nearest integer.

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06/07/20

A raft 4.6 m long, 1.8 m wide, and 32 cm thick, made from solid balsa wood, is floating in a freshwater lake. How many 63 kg people can it support? Round down your final answer to the nearest integer.
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06/07/20

A tire pump has a piston whose cross-sectional area is 0.0047 m2. If a force of 191 N is applied to the piston, find the pressure on the air in the pump.

Please round your answer to the nearest integer.
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06/07/20

Round to the nearest second. A 170−L water heater is rated at 8 kW. If 20 percent of its heat escapes, how long does the heater take to raise the temperature of 170 L of water from 20°C to 60°C?
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06/05/20

Unit conversions
Electric companies use an energy unit called a kilowatt-hour (KWHR) to measure your electric usage and generate your electric bill. If your house uses an average of 46 KWHR, how much should you... more
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06/05/20

Engineering Physics
A particle moving along the -axis has its position described by the function , where x=(5t^3+2t+3) where t is in sPart A- At t=2s what is the particle's position?Express your answer to three... more
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06/05/20

Engineering Physics Wave motion and Mechanics

Julie drives 100  to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 40.0  and half the distance at 60.0  . On her return trip, she drives half the time at... more
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06/04/20

How long will the frisbee remain in the air? and How far down range will the frisbee go
You take a frisbee to the top of the Washington Monument and send it sailing along horizontally at a speed of 5 m/s from the very top of the structure, which is 169.2 m above the ground.A) How long... more
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06/04/20

please answer this :
A parallel-plate capacitor has a plate area of 0.3 m2 and a plate separation of 0.1 mm. If thecharge on each plate has a magnitude of 5  10^–6 C then the force exerted by one plate on theother has... more
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06/04/20

please answer this :
A conducting sphere of radius 0.01 m has a charge of 1.0  10^–9 C deposited on it. Themagnitude of the electric field in N/C just outside the surface of the sphere is:A) zeroB) 450C) 900D) 4500E)... more
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06/04/20

How do you find the question mark for the part of the force exerted on the stone? The answer should include other variables
ball = sphere ( pos=vec(-2,1,0 ), m = 0.5 , alpha = 0*pi/180,#alpha = angle radius=0.02, color=color.red, make_trail=True, trail_type='points') #,interval=50,retain=50)ball.v = vec( 1,... more
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06/02/20

A frog is climbing out of a well that is 11 feet deep.
A frog is climbing out of a well that is 11 feet deep. The frog can climb 3 feet per hour but then it rests for an hour, during which it slips back 1 foot. How long will it take for the frog to get... more
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06/01/20

The product of two consecutive integers is −8 more than the square of the smaller one. Find the integers.
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06/01/20

A total of 684 J of work are done on a bed by moving it 3.00 m against a frictional force of 80.0 N. Determine the horizontal applied force exerted on the bed.
I need to have a diagram, list out all of the givens and formulas. Then you can solve.
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05/31/20

projectile motion
Hanamichi Sakuragi has a height of 190 cm. He is about to make a shot in the 3-point line which is 7.5 m away from the basketball ring. If he shoots the ball without jumping and with his hand is 50... more
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05/30/20

Math Projectiles
 A 6 ft tall archer shoots an arrow at a target 300 ft away. 1.5 seconds later, it lands in the bull’s eyes which is 3 ft off the ground.
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05/30/20

please answer this

55. To make a galvanometer into an ammeter, connect:A) a high resistance in parallelB) a high resistance in seriesC) a low resistance in seriesD) a low resistance in parallelE) a source of emf in... more
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05/30/20

please answer this
Two identical batteries, each with an emf of 18 V and an internal resistance of 1 , arewired in parallel by connecting their positive terminals together and connecting their negativeterminals... more
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05/29/20

physics question
A plane is flying west at 310 m/s with a crosswind blowing south at 85 m/s. What isthe resultant velocity of the plane?Select one:a. 321 m/s @ 22° south of westb. 227 m/s @ 45° south of westc. 227... more
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05/29/20

Set up and solve a rational equation that models the following situation answer with complete sentence
It takes will 4 hours longer to paddle 42 km upstream then it takes him to paddle the same distance back downstream. The speed of the current is 4 km per hour. Determine Will's paddling speed in... more
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05/27/20

physics question
On May 5, 1979, Dr. Hans Liebold achieved one of the highest average lap speeds on any closed-circuit racetrack. Racing in a Mercedes-Benz C111-IV experimental coupe in Nardo, Italy, Liebold lapped... more
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