Recent questions in Physics

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Find the specific heat of a material if a 6-g sample absorbs 50 J when it is heated from 30°C to 50°C.

Matas asked Dec 28, 2023

by Matas

4.4k points

1 answer

1 vote

86.9k views

What is the equation: If F=10 N, a=5 m/s², m=?

Oriol Nieto asked Dec 28, 2023

by Oriol Nieto

4.3k points

1 answer

2 votes

141k views

1. A man walks on a straight road from his home to market 2.5 km away with a speed of 5km/h. Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km/h. The average speed

Nofel Mahmood asked Dec 28, 2023

by Nofel Mahmood

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1 answer

5 votes

105k views

A force is applied to an object to slow to object down. Causing the 100 kg object to go from a kinetic energy of 32J to 19J How work was done on the object 3200 J 13J 13 J 1900

Kingk asked Dec 28, 2023

by Kingk

4.6k points

1 answer

1 vote

160k views

What must be the current in a resistor if the drop in potential across it is 0.750V and it uses 2.00W of power?1.25A1.50A0.375A2.67A

Mahesh Gareja asked Dec 28, 2023

by Mahesh Gareja

4.3k points

1 answer

4 votes

222k views

6. A police officer with an exceptionally good ear hears an approaching motorcycle. The engine sound he hears as the bike approaches is 195 Hz. (a) Is the actual sound the bike makes higher or lower in

Kachanov asked Dec 28, 2023

by Kachanov

3.9k points

1 answer

3 votes

58.3k views

What can be used to power things like lightbulbs but also can be used to send and receive information? gamma rays Electrical circuits Electromagnet signals Radio waves

Suchit Kumar asked Dec 28, 2023

by Suchit Kumar

4.1k points

1 answer

2 votes

79.4k views

What's force and laws of motion

TobyD asked Dec 28, 2023

by TobyD

3.8k points

1 answer

5 votes

10.7k views

A cyclist traveling at 7m / s sees with horror an automobile door opening in front of him, at a distance of 11m. Its reflex time (to apply the brakes and see the door) is 0.400s.a) What must be its acceleration

Abdussamet asked Dec 28, 2023

by Abdussamet

4.3k points

1 answer

3 votes

191k views

A cube of an unknown mass is placed on a flat surface. The cube has a volume of 8 cm^3. If the pressure exerted by the cube on the surface is 5 Pa, what must be the mass of the cube?

Vikas Periyadath asked Dec 28, 2023

by Vikas Periyadath

3.5k points

1 answer

0 votes

88.5k views

A skilled adult bicyclist and his 10-year-old brother decide to have a race coasting down a hill starting from rest. If friction and air resistance have no effect, what outcome would you predict? They

Hammad Nasir asked Dec 28, 2023

by Hammad Nasir

4.1k points

1 answer

0 votes

214k views

bob believes that giraffes have long necks because they have stretched their necks to try and reach food that high in trees. Sunce parents had stretched its neck, it passed the long neck on to its offspring.

William Dan Terry asked Dec 28, 2023

by William Dan Terry

3.8k points

2 answers

19 votes

183k views

What is temperature of 180 K is equal to in Rankine?

TK Gospodinov asked Dec 28, 2023

by TK Gospodinov

4.2k points

1 answer

1 vote

127k views

blocks a and b of masses m and 3m, respectively, are on a horizontal surface of negligible friction. a horizontal force fa is exerted on block a, as shown. if the force exerted by block b on block a has

Jenglert asked Dec 28, 2023

by Jenglert

4.1k points

1 answer

2 votes

10.8k views

A vehicle is traveling at a velocity of 30 meters per second. Exactly 5 second later, its velocity changed by a factor of 0.6. What was the vehicle's average acceleration over that time period?

Siva Sankaran asked Dec 28, 2023

by Siva Sankaran

4.4k points

1 answer

4 votes

163k views

You push a block at a constant speed across a horizontal surface that has a friction force of 2N. Your push is 2N and the displacement of the block is 10 m. How much total work is done on the block?

Duygu asked Dec 28, 2023

by Duygu

4.1k points

1 answer

2 votes

211k views

17. Each of the figures below shows the velocity v of a particle and the force or forces acting on the particle. Forces F1 and F2 have the same magnitude. In which figure is the particle's speed or direction

Vlad Krasnov asked Dec 28, 2023

by Vlad Krasnov

3.9k points

1 answer

2 votes

96.4k views

PLEASE HELP ME!!! predict the products of each of the following equations. Then explain how you made your predictions. Be sure to balance the equations. ___NaBr + ___Ca → _______ + _______ ___Mg + ___O2

Rosty Kerei asked Dec 28, 2023

by Rosty Kerei

4.4k points

1 answer

7 votes

58.7k views

What type of electromagnetic waves cause sunburns?.

Nabulke asked Dec 28, 2023

by Nabulke

4.1k points

2 answers

0 votes

184k views

What is the magnitude and direction of an electric field that would just support the weight of an electron? (m = 9.11 x 10^-31 kg)

Skyfree asked Dec 28, 2023

by Skyfree

4.0k points

1 answer

5 votes

83.0k views

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