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What happens to the potential energy of a stationary charge when it begins to move freely from one point to another under the influence of an electric field?

Simon Seo asked Oct 4, 2024

by Simon Seo

8.3k points

1 answer

2 votes

172k views

A car travels 13 km southeast and then 16 km in a direction 40° north of east. Find the magnitude of the car's resultant vector.

David Fontes asked Oct 4, 2024

by David Fontes

8.6k points

1 answer

5 votes

23.3k views

A cylinder of gas at room temperature (20°C) has a pressure P1. To what temperature in degrees Celsius would the temperature have to be increased for the pressure to be 1.2p₁?

UseRj asked Oct 4, 2024

by UseRj

8.3k points

1 answer

4 votes

125k views

93. A car travelling at 20 m s-¹ was 200 m from a set of traffic lights, which were red. The driver slows down until he was 50 m from the lights and travelling at 8 m s¹, when the lights changed to green.

Esote asked Oct 4, 2024

by Esote

7.1k points

1 answer

3 votes

194k views

When driving on a two-lane roadway, what is the correct action to take when a school bus stops for passengers?

Bruce Stringer asked Oct 4, 2024

by Bruce Stringer

7.9k points

1 answer

2 votes

183k views

A 1.0 kg mass that can move along the x-axis experiences the potential energy u=(x²-x)j, where x is in m. The mass has a velocity vx = 6.0 m/s at position x = 1.0 m. What is the kinetic energy of the mass

Bakkot asked Oct 4, 2024

by Bakkot

7.4k points

1 answer

3 votes

102k views

What is the best answer to report for 3.478 g ´1.164 g 2.00 mL – 0.349 g/mL a) 8.12 g/mL b) 2.56 g/mL c) 4.78 g/mL d) 6.23 g/mL

Rlb asked Oct 4, 2024

by Rlb

8.2k points

1 answer

1 vote

201k views

A clean metal surface is irradiated with light of three different wavelengths λ1 , λ2 , and λ3 . The kinetic energies of the ejected electrons are as follows: λ1 : 7.2 × 10⁻²⁰ J; λ2 : approximately zero;

Igofed asked Oct 4, 2024

by Igofed

7.5k points

1 answer

5 votes

6.8k views

A photoresistor is an electronic component whose electrical resistance _______ when it is exposed to light. 1) changes 2) increases 3) doesn't change

Jason Harrison asked Oct 4, 2024

by Jason Harrison

8.6k points

1 answer

4 votes

81.6k views

What is the rotational kinetic energy of Earth on its axis? a) 2.5 x 10^29 J b) 5.0 x 10^29 J c) 7.5 x 10^29 J d) 1.0 x 10^30 J

Mohana B C asked Oct 4, 2024

by Mohana B C

7.8k points

1 answer

0 votes

20.2k views

A train accelerates from rest at 3 m/s2. How fast is it going after 30 seconds? (hint: initial velocity =0m/s)

Som Bhattacharyya asked Oct 4, 2024

by Som Bhattacharyya

7.7k points

1 answer

2 votes

167k views

A freight train left Washington and traveled south. A diesel train left six hours later traveling at 85 km/h in an effort to catch up to the freight train. After traveling for 11 hours, the diesel train

Nikolas Grottendieck asked Oct 4, 2024

by Nikolas Grottendieck

7.9k points

1 answer

2 votes

177k views

Two cars are headed towards an intersection and are due to collide anytime now. Car A has a mass of 1500 kg and a velocity of <20, 0, 0> m/s. Car B has a mass of 1500 kg and a velocity of <0, -23, 0>. Let your system be

Shehan asked Oct 4, 2024

by Shehan

8.2k points

1 answer

1 vote

68.4k views

A 30N force is applied to a sled to the left across loosely packed snow. An opposing force of 10N is working against the sled's motion. Due to its mass, gravity is applying a force of 200N.

Ray Donnelly asked Oct 4, 2024

by Ray Donnelly

8.6k points

1 answer

5 votes

142k views

The stream of a river is flowing with a speed of 2 km/h. A swimmer can swim at a speed of 4 km/h. What should be the direction of the swimmer with respect to the flow of the river to cross the river straight?

Mario Duarte asked Oct 4, 2024

by Mario Duarte

8.3k points

1 answer

1 vote

144k views

A normal Helium nucleus consists of two protons and two neutrons. The protons actually repel each other because they have the same charge. The main force that holds this nucleus together is__________.

Alexey Petushkov asked Oct 4, 2024

by Alexey Petushkov

8.4k points

1 answer

2 votes

77.8k views

Mt. Asama, Japan, is an active volcano. In 2009, an eruption threw solid volcanic rocks that landed 1 km horizontally from the crater. If the volcanic rocks were launched at an angle of 40° with respect

Yaoyao asked Oct 4, 2024

by Yaoyao

8.0k points

1 answer

2 votes

42.5k views

Nevin runs 12 miles north and then 5 miles east. What is the shortest distance she must travel to return to her starting point.

Dmitry Manannikov asked Oct 4, 2024

by Dmitry Manannikov

7.4k points

1 answer

0 votes

149k views

What does light energy mean?

Varunthacker asked Oct 4, 2024

by Varunthacker

7.9k points

1 answer

2 votes

192k views

there exists a circuit that has an unknown equivalent resistance, an equivalent inductance of 25 mh, and an equivalent capacitance of 20 nf. what value of resistance would result in the circuit being critically

Displaced Hoser asked Oct 4, 2024

by Displaced Hoser

6.9k points

1 answer

4 votes

23.8k views

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