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Why are the turbines for hydroelectric dams located far below the top of the dam?(1 point) Responses to allow the potential energy of the water to increase greatly before reaching the turbines to allow

Lokesh Sanapalli asked Aug 3, 2023

by Lokesh Sanapalli

7.3k points

1 answer

5 votes

39.0k views

5. A bullet is fired horizontally from a 40 m tall buildingwith a speed of 1000 m/s. Calculate the vertical componentof its velocity just before it hits the ground? (1 point)A. O-8.804 m/sB. O-43.139 m/sC.

Eugene Khyst asked Aug 3, 2023

by Eugene Khyst

7.4k points

1 answer

3 votes

1.6k views

an image produced by a concave mirror of a focal length 8.7cm, the object is 13.2cm tall and at a distance 19.3cm from the mirror, (a) find the location and height of the image, (b) find the height of

Mike Barwick asked Aug 3, 2023

by Mike Barwick

6.1k points

1 answer

4 votes

115k views

How many joules are in 3.5kJ?

Adrian Wragg asked Aug 3, 2023

by Adrian Wragg

6.5k points

1 answer

16 votes

52.0k views

Help i dont understnad and its realky confusing

Z Chen asked Aug 3, 2023

by Z Chen

6.4k points

1 answer

20 votes

230k views

the compound nf3 is colorless , explosive, highly hazardous and toxic gas that is component of some rocket fuels

Vitor Braga asked Aug 3, 2023

by Vitor Braga

6.4k points

1 answer

0 votes

96.5k views

What is the total amount of heat needed to change 31g of silver at 0.0°C to 1°C? The specific heat of silver is 0.129 J/g∙°C

Yannis asked Aug 3, 2023

by Yannis

6.5k points

1 answer

2 votes

228k views

PLEASE HELP Which is not a characteristic of a reflecting optical telescope? A) The mirrors inside the telescope do not need to be cleaned often. B) They are easier and cheaper to create. C) There is minimal

Rajesh Naddy asked Aug 3, 2023

by Rajesh Naddy

6.6k points

1 answer

3 votes

2.9k views

A golfer strikes a golf ball from the top of a 2.3 m tall hill to the green below. The initial velocity of the golf ball is 28 / s / (45 degrees) above the horizontall Determine golf ball's time of flight,

Rowanto asked Aug 3, 2023

by Rowanto

6.4k points

1 answer

4 votes

18.4k views

You are stranded in a desert and think you see a puddle of water in the sand, why?A)Light reflected off the sand confuses your eyesB)The air close to the sand is hot and causes light to bendC)The light

PixelEinstein asked Aug 3, 2023

by PixelEinstein

7.1k points

1 answer

1 vote

204k views

9.When a branding iron gets heated in a fire, the handle becomes hot. how is the energy transferred to the handle?Select one:a. Conductionb. Convectionc. Radiationd. All of the above

Jan Olaf Krems asked Aug 3, 2023

by Jan Olaf Krems

6.2k points

1 answer

4 votes

145k views

What is the third most abundant gas in the atmosphere.

Vizag asked Aug 3, 2023

by Vizag

6.3k points

1 answer

21 votes

35.9k views

A 6,000 kg truck moving at +8 m/s has the same momentum as a 2,500 kg car. What is the velocity of the car?

Angela Amarapala asked Aug 3, 2023

by Angela Amarapala

6.2k points

1 answer

5 votes

174k views

У Z Eright left A parallelepiped is in an electric field which, to the left of the dashed line, has the value Eleft =< -55.37,0,0 > N/C, and Eright =<55.37,0,0 > N/C to the right of the dashed line. The top and bottom of the

MeanGreen asked Aug 3, 2023

by MeanGreen

7.3k points

1 answer

3 votes

235k views

A satellite orbiting Earth at an orbital radius r has a velocity v. Which represents the velocity if the satellite is moved to an orbital radius of 4r? A. 4v B. (1)/(2)v C. (1)/(4)v D. 2v

Jiao asked Aug 3, 2023

by Jiao

7.1k points

1 answer

5 votes

171k views

A 60kg man jumps off a 30 foot building. Assuming he falls from rest and there is negligible air resistance, how long will it take him to reach the ground?

Salgiza asked Aug 3, 2023

by Salgiza

6.8k points

1 answer

0 votes

164k views

estimate the amount of mass that is converted to energy when a proton combines with a deuterium nucleus to form 3he.

Adis asked Aug 3, 2023

by Adis

6.6k points

1 answer

4 votes

183k views

force of 5000N is acting on a body of mass 50kg if force of friction on the body is 100N. Calculate how long it takes for the body to gain the velocity of 50m/s from rest

Dan Tanner asked Aug 3, 2023

by Dan Tanner

6.7k points

1 answer

17 votes

96.9k views

A mass of 0.368 kilograms is suspended from a spring, and the spring stretches 12.3 centimeters. What work must be done to stretch the spring twice as far as it is stretched in part b? Include units in

Sahithi asked Aug 3, 2023

by Sahithi

6.1k points

1 answer

4 votes

141k views

A 7.50 kg bowling ball moving6.42 m/s strikes a 1.60 kg bowlingpin at rest. After, the pin moves14.8 m/s at a -47.0° angle. Whatis the x-component of the ball'sfinal velocity?X-component (m/s)

Anthonator asked Aug 3, 2023

by Anthonator

7.0k points

1 answer

1 vote

90.1k views

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