Recent questions in Physics

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What are some of the downsides of using hydroelectric power?.

JM Hicks asked Jul 15, 2023

by JM Hicks

5.9k points

1 answer

4 votes

119k views

A 20 g fridge magnet is being held onto a fridge by a 0.9 N force. Assuming μs = 0.30, calculate: A. Force of friction acting on the magnet B. The weight of the magnet C. The acceleration of the magnet

Wilthon asked Jul 15, 2023

by Wilthon

5.7k points

2 answers

4 votes

127k views

The Earth has ________ for the past 2 million years. A. gradually warmed slowly B. frozen then quickly thawed C. gradually cooled D. stayed the same temperature E. cycled between hot and cold

Matteo Rulli asked Jul 15, 2023

by Matteo Rulli

6.1k points

1 answer

21 votes

29.4k views

Find the equivalent resistance of this circuit.

Apolka asked Jul 15, 2023

by Apolka

6.8k points

1 answer

9 votes

95.9k views

In a smartphone, how many megabytes (MB) are there in thirty-one gigabytes (GB) of memory?

Dronz asked Jul 15, 2023

by Dronz

6.2k points

1 answer

5 votes

34.3k views

Which object has the least thermal energy?

Maarvd asked Jul 15, 2023

by Maarvd

6.8k points

2 answers

18 votes

23.8k views

Two 2 cm-diameter disks spaced 1.396 mm apart form a parallel-plate capacitor. The electric field between the disks is 549,707.592 V/m. An electron is launched from the negative plate. It strikes the positive

Marquies asked Jul 15, 2023

by Marquies

6.1k points

1 answer

3 votes

104k views

8 Figure 2.24 shows a model of a skyscraper which Omar made for the school exhibition. It is mounted on a firm plastic base and has a total weight, W, of 4.0 N. Omar applies a force Fas shown to test the

Zaki Choudhury asked Jul 15, 2023

by Zaki Choudhury

7.2k points

1 answer

2 votes

5.9k views

If you move 70 meters in 20 seconds what is your speed

Vpicaver asked Jul 15, 2023

by Vpicaver

6.2k points

1 answer

4 votes

107k views

A simple harmonic oscillator has an amplitude of 3. 50 cm and a maximum speed of 26. 0 cm/s. What is its speed when the displacement is 1. 75 cm?.

Silverzx asked Jul 15, 2023

by Silverzx

6.5k points

1 answer

16 votes

123k views

The diagram shows a heating curve for water. Which statement best describes what is happening at segment W-X? Heating Curve for Water O Water is absorbing heat. O Water is releasing heat. O Aliquid is

Beggs asked Jul 15, 2023

by Beggs

5.8k points

1 answer

13 votes

184k views

Hi. Can I get help with question 49, please ?

RoboBear asked Jul 15, 2023

by RoboBear

7.1k points

1 answer

2 votes

59.3k views

Bob pushed a crate up a 3.0m long ramp to a truck bed with a force of 800n. The truck bed is 1.5m off the ground and the crate has a mass of 120kg calculate the following work output work input efficiency

Sekomer asked Jul 15, 2023

by Sekomer

6.8k points

1 answer

1 vote

31.0k views

As the block slides down the incline, the sum of its gravitational potential energy with respect to the horizontal and kinetic energyA. DecreasesB. IncreasesD. Stays the same

Chynah asked Jul 15, 2023

by Chynah

6.2k points

1 answer

1 vote

96.1k views

The type of force that does not require contact for 2 objects to feel a push or pull is ?

Ooboo asked Jul 15, 2023

by Ooboo

6.3k points

1 answer

5 votes

216k views

A bullet with a mass of 45 g is fired into a 8.3-kg block of wood resting on a floor against a spring. This ideal spring (k = 76 N/m) has a maximum compression of 28 cm. What was the initial speed of the

Ritaban asked Jul 15, 2023

by Ritaban

5.6k points

1 answer

0 votes

47.1k views

4. Calculate the kinetic energy of a 4.7 kg object moving at a speed of 7 m/s. SHOW YOUR WORK

Kevser asked Jul 15, 2023

by Kevser

6.0k points

2 answers

14 votes

126k views

Calculate the mass of an object whose weight is 400n and accleration due to gravity is 10 m/ s

Andrew Dunn asked Jul 15, 2023

by Andrew Dunn

6.1k points

1 answer

19 votes

75.5k views

The speed at which a sound wave travels depends on the _____.A.energyB.amplitudeC.mediumD.frequency

StudioEvoque asked Jul 15, 2023

by StudioEvoque

5.7k points

2 answers

2 votes

230k views

According to Newton's second law of motion, when an object is acted upon by a net unbalanced force, what can be said about the acceleration?a.)It is zero.b.)It is inversely proportional to the net force.

SuperGoTeam asked Jul 15, 2023

by SuperGoTeam

6.4k points

1 answer

4 votes

218k views

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