Recent questions and answers in Physics

Recent questions and answers in Physics

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

Tomas Romero answered Jan 4, 2024

by Tomas Romero

3.6k points

1 answer

2 votes

10.8k 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

Dtrv answered Jan 4, 2024

by Dtrv

2.8k points

1 answer

3 votes

191k views

Help!! Please!! 15 points 15 points

Linqu answered Jan 4, 2024

by Linqu

2.7k points

2 answers

2 votes

78.3k views

Does dispersive power of the material of a prism depends upon the shape, size and angle of prism? Explain.

Leo Izen answered Jan 4, 2024

3.1k points

2 answers

19 votes

140k views

If a man pulls a box with a force of 90 N at an angle of 45 degrees, then what are the X and Y components of the force?

Kagan answered Jan 4, 2024

by Kagan

2.8k points

1 answer

0 votes

227k views

The wheel of a motor cycle is of radius 35 cm. How many revolutions per minute must the wheel make so as to keep a speed of 66 km/h?.

Vladimir Dyuzhev answered Jan 4, 2024

by Vladimir Dyuzhev

2.7k points

1 answer

1 vote

137k views

Who isn’t all white light or even yellow light the same?

Bolt UIX answered Jan 4, 2024

3.1k points

1 answer

5 votes

17.3k views

An automobile travels South 130 miles in 2.5hours and then travels West 150 miles in 3.5hours. What is the average speed and velocity ofthe trip?

Boqapt answered Jan 4, 2024

by Boqapt

2.9k points

1 answer

3 votes

92.2k 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

KML answered Jan 4, 2024

by KML

2.9k points

1 answer

7 votes

58.7k views

Describe the friction of smooth surfaces

Noor Nawaz answered Jan 4, 2024

3.2k points

1 answer

13 votes

26.7k views

How do you find the amplitude of a wave?

Omayr answered Jan 4, 2024

by Omayr

3.2k points

2 answers

0 votes

49.8k views

2.63 kg of molten copper already at its melting point has 750 kJ removed from it. In degrees Celsius, what will be the final temperature of the copper?

Adriano Castro answered Jan 4, 2024

by Adriano Castro

3.0k points

1 answer

15 votes

141k views

A uniform door weighs 54.0 N and is 1.30 m wide and 2.60 m high. What is the magnitude of the torque due to the door’s own weight about a horizontal axis perpendicular to the door and passing through a

Kasaname answered Jan 4, 2024

3.2k points

1 answer

3 votes

54.9k views

Write the description for each of the 5 sections. (Forwards,backward,stopped)

SuperAadi answered Jan 4, 2024

3.1k points

1 answer

0 votes

24.8k views

A train travels a distance of 20miles for 50min. Calculate the speed of the train.

Bill Moon answered Jan 3, 2024

3.4k points

2 answers

19 votes

153k views

What's force and laws of motion

Arst answered Jan 3, 2024

by Arst

3.3k points

1 answer

5 votes

10.7k views

How does a firefighter use science

Piwo answered Jan 3, 2024

by Piwo

2.7k points

1 answer

4 votes

194k views

You weigh 720 N. What would you weigh if the Earth weretwo times as massive as it is and its radiuswere six times its present value?Answer in units of N.

Tumbleweed answered Jan 3, 2024

3.2k points

1 answer

0 votes

14.5k views

A satellite is in orbit around Earth. How does the force exerted by Earth on the satellite compare to the force exerted by the satellite on Earth? Note: >> means much greater than; << means much less than.

Champion answered Jan 3, 2024

2.9k points

1 answer

1 vote

57.4k views

A bowling ball rolls down a lane that is 45 meters long in 7.5 seconds. What was the magnitudeof the bowling ball's average velocity?1) v = 0.17 m/s2) v = 6 m/s3) v = 337.5 m/s4) v = 45 m/s

Brosto answered Jan 3, 2024

by Brosto

3.1k points

1 answer

4 votes

190k views

To see more, click for all the questions in this category.

Search QAmmunity.org