Recent questions in Physics

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Which hand is negatively charged?

Bill Noble asked Jul 5, 2023

by Bill Noble

5.6k points

1 answer

0 votes

2.8k views

Is the following a vector or a scalar?A. today's dateB. a train traveling at 80 km/hC. the force of gravityD. the temperature outside

Asdjfiasd asked Jul 5, 2023

by Asdjfiasd

6.2k points

1 answer

3 votes

46.3k views

A machine puts out 100 watts of power for every 1000 watts put into it. The efficiency of the machine is 50%. 90%. 10%. 110%. none of the above

Magnus Westin asked Jul 5, 2023

by Magnus Westin

5.5k points

1 answer

7 votes

14.0k views

Any two difference between negative and positive charge of class 7 please fast

Bulletmagnet asked Jul 5, 2023

by Bulletmagnet

6.2k points

1 answer

10 votes

25.7k views

A tennis ball with a mass of 57 g and velocity of 20 m s' is struck by a racket. The ball's velocity changes to 40 m s' in the opposite direction. What is the average force acting on the ball if its time

Rivo asked Jul 5, 2023

by Rivo

6.6k points

1 answer

3 votes

133k views

Five cells, rated at 2 volts each, are connected in parallel to make a battery. What is the battery voltage?

Anand Kore asked Jul 5, 2023

by Anand Kore

5.9k points

1 answer

2 votes

212k views

A heavy truck on a road outside can cause ripples in a glass of water inside a house. What is responsible for this phenomenon? A. Waves travelling through the grounds to the glass B. Loud noises from the

Stefano Brozzi asked Jul 5, 2023

by Stefano Brozzi

6.6k points

1 answer

9 votes

47.7k views

You apply a force of 10 N to a grocery cart to get an acceleration of 0.5 m/s2. If you apply a force of 20 N to the same grocery cart, its acceleration will be

Jwsample asked Jul 5, 2023

by Jwsample

6.0k points

2 answers

3 votes

174k views

A race car goes around a 200 m Radius curve at a constant speed of 40 m/s what is the acceleration

Andy Barnard asked Jul 5, 2023

by Andy Barnard

6.2k points

1 answer

1 vote

176k views

Newton’s third law of motion on a flying chair swing ride

Alejandro Bastidas asked Jul 5, 2023

by Alejandro Bastidas

6.6k points

1 answer

5 votes

223k views

which of the following is Not a load in an electrical circuit. a. bulb b. electric fan c. oven d.wire

Imtiaz Abir asked Jul 5, 2023

by Imtiaz Abir

6.0k points

1 answer

3 votes

184k views

Explain how the fixed points are used when calibrating a thermometer.

Wooff asked Jul 5, 2023

by Wooff

6.7k points

1 answer

14 votes

36.6k views

PLEAS HELP ME!!!!!!!! I NEED THIS IN MY SCHOOL TOMORROW!!!PLEAS!!PLEAS!! .......................................................................................... What is the gravitational force exerted

Andrii Starusiev asked Jul 5, 2023

by Andrii Starusiev

5.5k points

1 answer

4 votes

97.7k views

For a truck moving at constant speed... 1. the distances traveled during each time period are the same. 2. the direction traveled during each time period must be the same. 3. the truck must accelerate.

Thora asked Jul 5, 2023

by Thora

5.8k points

1 answer

5 votes

2.6k views

What must be the charge of a particle having E = 81 N/C at 49 mm from the said particle? Express in Coulombs. Use k = 9.0 x 109 kg⋅m3⋅s−2⋅C−2

Axel Morgner asked Jul 5, 2023

by Axel Morgner

6.3k points

1 answer

2 votes

212k views

A 1.0-kilogram object moving east with a velocity of 10 meters per second collides with a 0.50-kilogram object that is at rest. Neglecting friction, what is the momentum of the system after the collision?

Avi Marcus asked Jul 5, 2023

by Avi Marcus

5.7k points

1 answer

1 vote

22.4k views

In how many ways can sound be produced

Loknar asked Jul 5, 2023

by Loknar

6.5k points

1 answer

15 votes

53.6k views

Seeds are often found on which part of a gymnosperm? branch leaf cone stem

River asked Jul 5, 2023

by River

6.0k points

1 answer

9 votes

229k views

What did Wegener propose regarding how the continents moved, and what was the problem with it?

Anamul asked Jul 5, 2023

by Anamul

5.5k points

1 answer

1 vote

25.7k views

What happens when thermal energy is added into a basketball game

Just James asked Jul 5, 2023

by Just James

5.9k points

1 answer

21 votes

197k views

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