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disa [49]
3 years ago
3

Rolling a drum is work against friction why​

Physics
1 answer:
sammy [17]3 years ago
4 0
It does rotational work. We can view this work as a medium between gravitational potential energy and rotational kinetic energy. So when it accelerates down the incline, friction force takes some of the gravitational potential energy and turns into diario al kinetic energy
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What is Mass definition for physics
jolli1 [7]

Answer:

Scientific Definition of Mass Mass is the quantity of inertia (resistance to acceleration) possessed by an object or the proportion between force and acceleration referred to in Newton's Second Law of Motion (force equals mass times acceleration).

Explanation:

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3 years ago
Which of the following statements about current are true? (i) In metal wires,it is the negative charges (Le, the electrons) that
IRINA_888 [86]

Answer:

d. All three statements are true.

Explanation:

In the metals the electrons are the charge carriers and they are the only mobile charges causing the flow of current when subjected to potential difference.

The electrons being negatively lead to the flow of current in opposite direction. The direction of the current is opposite to the direction of the negative charges.

5 0
4 years ago
Which of the following scenarios would most likely be considered pseudoscience?
natali 33 [55]

The belief that the stars determine our fate is considered to be pseudoscience .

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Pseudoscience, which is defined as an activity that purports to be scientific but is actually not, is defined as seems science. Science does not engage in extraterrestrial affairs it simply studies the natural world. Science cannot provide an answer to morality, immorality, or questions of meaning or purpose, but it does require ethical behavior. In other hand astronomy is regarded as pseudoscience since no link between the locations of the stars and human behavior can be demonstrated using evidence from science.

To know about star

brainly.com/question/10714478

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3 0
1 year ago
Read 2 more answers
A car of mass 775 kg traveling at a velocity of 30 m/s in the positive x-direction crashes into the rear of a truck of mass 1,47
Thepotemich [5.8K]

Answer:

velocity of the car is 7.3516 m/s

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775*30 + 1475*0 = 775*v2a+1475*11.9

Let v2a be x

23250 + 0 = 775x + 17552.5

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775x = 5697.5

X = 7.3516 m/s

4 0
3 years ago
Which circuit element is of special importance in AC circuits?
Norma-Jean [14]

Answer:

Explanation:capacitor

8 0
3 years ago
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