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Given a ball at some height above the ground where its total mechanical energy is 5.00 J. If the ball falls down to a lower height in free fall where it’s gravitational potential energy is 2.00 J then

Systempuntoout asked Dec 17, 2023

by Systempuntoout

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one gram of water becomes 1671cm³ of steam when boiled at a pressure of one atmospheric. if the specific latent heat of vaporization of water is 2260 kJ/kg. Calculate (a) the external work done (b) the

Jakob Lithner asked Dec 17, 2023

by Jakob Lithner

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1 vote

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How many planets are made up of gas

Noell asked Dec 17, 2023

by Noell

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1 answer

13 votes

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What would be the final temperature if a 2 kg piece of lead at 200 °C is insertedin a container with 10 kg of water at 50 °C ? (specific heat capacity of lead, c'=128 J kg-1 °C !)?

Amaury Hanser asked Dec 17, 2023

by Amaury Hanser

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1 answer

4 votes

72.8k views

It is not good to burn agricultural waste

HuLu ViCa asked Dec 17, 2023

by HuLu ViCa

6.2k points

1 answer

3 votes

46.5k views

Which answer best describes US national Road

Ashlin Karkada asked Dec 17, 2023

by Ashlin Karkada

6.3k points

2 answers

17 votes

74.9k views

An incident ray comes in parallel to the principle axis of a concave mirror. Is it reflected: w) back along the incident ray x) at 30 degrees to incident ray y) through the focal point z) through the center

Mahmoud Mabrok asked Dec 17, 2023

by Mahmoud Mabrok

6.3k points

1 answer

17 votes

160k views

Which two forms of energy do burning substances produce

Anson asked Dec 17, 2023

by Anson

6.8k points

2 answers

5 votes

60.4k views

a .5m string is connected to a stationary object and an object weighing .2kg spinning around in a circle at 5m/s. what is the work done by the string on the object during one full rotation

Vlado asked Dec 17, 2023

by Vlado

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1 answer

3 votes

9.1k views

Annie enjoys going to the beach to look for shells. On Saturday, she found 4 times as many shells as she found on Sunday.If Annie found 21 more shells on Saturday than on Sunday, how many shells did she

Rkabhishek asked Dec 17, 2023

by Rkabhishek

5.3k points

2 answers

3 votes

30.0k views

Suppose that a pendulum has a period of 1.5 seconds. How long does it take to make a complete back-and-forth vibration? Is this 1.5-second period pendulum longer or shorter in length than a 1-second period

Antoine Krajnc asked Dec 17, 2023

by Antoine Krajnc

5.7k points

1 answer

16 votes

153k views

When a bell is rung by striking it with a metal rod, the sound waves the bellproduces move

Greg Navis asked Dec 17, 2023

by Greg Navis

5.9k points

1 answer

0 votes

191k views

9. If you increase the velocity of an object moving in a circle, does it require more centripetal force or less?

Vishesh Handa asked Dec 17, 2023

by Vishesh Handa

6.1k points

2 answers

2 votes

173k views

What happens when one light bulb in a series circuit burns out.A. The rest of the bulbs continue to workB. Nothing will happenC. The rest of the bulbs become dimD. It breaks the circuit

Sarvesh Mishra asked Dec 17, 2023

by Sarvesh Mishra

6.2k points

1 answer

2 votes

155k views

A line passes through (1,-5) and (-3,7). What is the slope of the line?

Rune Jeppesen asked Dec 17, 2023

by Rune Jeppesen

6.2k points

1 answer

1 vote

210k views

Point charges create equipotential lines that are circular around the charge (in the plane of the paper). What is the potential energy, in nJ, of a 1 nC charge located 2.82 m from a 2 nC charge ?

Joren asked Dec 17, 2023

by Joren

5.4k points

1 answer

2 votes

123k views

Jeremy pulls a slinky a distance of 13 inches from its equilibrium position and then releases it. The time for one oscillation is 1 second.Find the amplitude and period of the slinky.

Shae asked Dec 17, 2023

by Shae

6.4k points

1 answer

3 votes

143k views

g=9.8m/s^2A student pulls his younger sister in a sled (combined mass 35 kg) with a rope that is angled at = 13° with a force of 270 N. The coefficient of friction between the sled and the ground is 0.

Zack Dawood asked Dec 17, 2023

by Zack Dawood

5.7k points

1 answer

3 votes

126k views

A motorcycle traveling at 25 m/s accelerates at a rate of 6 m/s2 for 4 seconds. What is the final speed of the motorcycle in m/s?

Michael Czolko asked Dec 17, 2023

by Michael Czolko

6.5k points

1 answer

2 votes

93.4k views

A steel cable on a bridge has a linear mass density of 15 kg/m. If the cable has been pulled taunt with a tension of 6,545 N, what is the speed of a wave on it?

Adam Swinden asked Dec 17, 2023

by Adam Swinden

5.4k points

1 answer

4 votes

90.2k views

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