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A man standing on a lift throws a ball upwards with the maximum initial velocity he can and is found to be equal to 55 m/s. After what time the ball returns to his hand if (a) the lift is stationary, (b)

Ninge asked Oct 16, 2024

by Ninge

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1 answer

4 votes

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What is the relationship between human perception of sound and our subjective responses to sound waves?

Jaegow asked Oct 16, 2024

by Jaegow

9.4k points

1 answer

5 votes

121k views

A long, straight, solid cylinder, oriented with its axis in the z− direction, carries a current whose current density is J . The current density, although symmetrical about the cylinder axis, is not constant

Paul Totzke asked Oct 16, 2024

by Paul Totzke

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4 votes

188k views

what happens to fringe width, when the separation between the slits as well as distance of the screen from the slit are halved?

JeffUK asked Oct 16, 2024

by JeffUK

8.7k points

1 answer

4 votes

187k views

Ronaldo or Messi? Who is better?

Ericjam asked Oct 16, 2024

by Ericjam

7.5k points

2 answers

2 votes

133k views

In the night sky, we are able to see some planets with the unaided eye because: A: They reflect the Sun's light. B: They reflect light from Earth. C: They emit bright light in the visible range. D: They

Jsl asked Oct 16, 2024

by Jsl

7.8k points

1 answer

5 votes

29.4k views

How much force is applied when pressing the octa or rear glass? A) 10 N B) 20 N C) 30 N D) 40 N

Xiawei Zhang asked Oct 16, 2024

by Xiawei Zhang

8.1k points

1 answer

0 votes

183k views

A room is floating in free space accelerated 2 m/s² in the direction of x. A person is running towards the right side of the room with speed 2 m/s wrt to a fixed frame. The person throws a ball 5 m/s wrt

Draganstankovic asked Oct 16, 2024

by Draganstankovic

6.9k points

1 answer

5 votes

21.9k views

Calculate the magnitude of the net torque on this system when it is first released. Use the fact that l2 > l1. Express your answer in terms of the variables m, l1, l2, and appropriate constants.

Brett Green asked Oct 16, 2024

by Brett Green

8.5k points

1 answer

0 votes

97.3k views

What factors do you need to take into consideration, regarding the load, before attempting to move it? Choose two options then select Submit. Remember Choose 2 options Manufacturer. Size. Colour. Weight.

Rohin Kumar asked Oct 16, 2024

by Rohin Kumar

8.0k points

1 answer

4 votes

60.4k views

Describe the general framework for a quantitative vs qualitative study?

Timgcarlson asked Oct 16, 2024

by Timgcarlson

8.4k points

1 answer

2 votes

43.4k views

The max power of an elevat is 20,000 j/s. How much time would it take the elevator to lift 500kg 30 meters

Prince Agrawal asked Oct 16, 2024

by Prince Agrawal

8.8k points

1 answer

1 vote

141k views

What is the net work, in joules, required to stop a crate of mass 84.4kg that is moving at a speed of 1.81m/s ?

John Cummings asked Oct 16, 2024

by John Cummings

7.7k points

1 answer

5 votes

104k views

A three-phase, 50 Hz transmission line, 100 km long delivers 30 MW at 120kV and 0.7 p.f. lagging. The resistance and reactance of the lines per phase per km are 0.2 ohm and 0.5 ohm respectively while capacitance

Belhor asked Oct 16, 2024

by Belhor

7.6k points

1 answer

1 vote

132k views

5. Which is the period of a simple pendulum with a length of 1.5 m?

Lukaszgard asked Oct 16, 2024

by Lukaszgard

8.0k points

1 answer

4 votes

176k views

At a particular instant, a 1.0 kg particle's position is r = (4.0î − 5.0ĵ + 6.0k) m, its velocity is v = (−1.0î + 5.0ĵ + 1.0k) m/s, and the force on it is F = (11.0î + 16.0ĵ) N. (Express your answers in

Yaser Kalali asked Oct 16, 2024

by Yaser Kalali

8.2k points

1 answer

1 vote

15.0k views

16. A golf ball is hit from the tee with a velocity of magnitude 27 m/s Northwards at an angle of 30 degrees above the horizontal. How long is the ball in the air? (hint: use trigonometry first)

Boreq asked Oct 16, 2024

by Boreq

8.2k points

1 answer

1 vote

206k views

If two springs of spring constants 2 N/m are connected in series then their Keff is: (a) 2 N/m (b) 4N/m (c) 4/3 N/m (d) 6 N/m

Matsemann asked Oct 16, 2024

by Matsemann

9.0k points

1 answer

3 votes

43.7k views

An accelerometer is placed on the spoke of a wheel at a fixed radius r = 6.1 in. from the axle. As the bike travels at a constant speed, the accelerometer reads a constant value of a = 42.7 ft/s^2. If

Kurt Hutchinson asked Oct 16, 2024

by Kurt Hutchinson

8.4k points

1 answer

0 votes

3.9k views

Given the following information about an asteroid, what is the density of Eros? Asteroid Eros Mass 7.2×1015 kg Diameter 18 km

Torben Schramme asked Oct 16, 2024

by Torben Schramme

8.7k points

1 answer

3 votes

68.1k views

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