1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lostsunrise [7]
3 years ago
12

A lamp is on a dimmer switch. As you turn the switch from the lowest setting to the highest setting, which statement would best

describe what happens? A) The light bulb consumes less electricity, burns dimmer and uses more power . B) The light bulb consumes more electricity, burns brighter and uses more power ) The light bulb consumes less electricity, burns brighter and uses more power. D) The light bulb consumes more electricity, burns brighter and uses less power.
Physics
1 answer:
avanturin [10]3 years ago
8 0

Answer:

D

Explanation:

When something that needs power that you are turning off you will not need power when its off.

You might be interested in
How should parents communicate with children?
Harman [31]
D. Get down to the child’s level to talk
8 0
3 years ago
A 544 g ball strikes a wall at 14.3 m/s and rebounds at 14.4 m/s. The ball is in contact with the wall for 0.042 s. What is the
Nezavi [6.7K]

Answer:

F = 371.738\,N

Explanation:

Let assume that ball strikes a vertical wall in horizontal direction. The situation can be modelled by the appropriate use of the definition of Moment and Impulse Theorem, that is:

(0.544\,kg)\cdot (14.3\,\frac{m}{s})-F\cdot \Delta t = -(0.544\,kg)\cdot (14.4\,\frac{m}{s} )

F\cdot \Delta t = 15.613\,\frac{kg}{m\cdot s}

The average force acting on the ball during the collision is:

F = \frac{15.613\,\frac{kg}{m\cdot s} }{0.042\,s}

F = 371.738\,N

3 0
3 years ago
Read 2 more answers
Which type of motion does a wooden block NOT have when sliding down a hill? Question 1 options: A. Vibrational B. Rotational C.
nlexa [21]

Answer - the correct option is option B rotational

Explanation-  

A block that is sliding Downloads on inclination can have vibrational movement due to certain ups and downs or inequalities on on the surface. It will have frictional force due to the aberrations present in the surfaces of both block and Road and it will have transitional motion acting as the block's position is changing from one point to another the only motion.

It doesn't have is rotational because rotational  movements happen with circular objects only.  

7 0
3 years ago
Read 2 more answers
A red pool ball is rolling directly east before it collides with the
ikadub [295]

Answer: North East

Explanation: Trust me, I was just doing this on the Ck-12 and this the answer I choose and It said I'm correct.

7 0
2 years ago
A car drives around a horizontal, circular track at constant speed. Consider the following three forces that act on the car: (1)
musickatia [10]

Answer: 1, 2 and 3.

Explanation:

By definition, work, is the process through which a force, applied on an object, produces a displacement of this object, and can be expressed as the dot product of the force vector and the displacement vector.

It can be also understood as the projection of the force in the direction of the displacement, so, if both vectors are perpendicular, as the projection of one vector along the other is nul, if a force and the displacement are perpendicular, no work is done.

In our case, the 3 forces mentioned, are perpendicular respect the displacement.

For normal force and gravity, as they act vertically, and the car moves along an horizontal trajectory, both are perpendicular, so no work is done.

For the friction force, as it is the only horizontal force present, it is just the centripetal force that keeps the car moving in a circular path.

It always aims to the center of the circle, along the radius at any point, so it is always perpendicular to the displacement also.

6 0
3 years ago
Other questions:
  • If an object only reflects ultraviolet photons, what color would it look to us? white a) black b)c) redclear d)violet e)
    5·1 answer
  • In 1958 a large earthquake in Alaska produced a tsunami. What was the approximate height of the tsunami?
    8·2 answers
  • A place or object used for comparison to determine if something is moving
    7·1 answer
  • A rocket is dropped out of an airplane at 100 m/s (downward). If the rocket fires causing an upward acceleration of Ct2 and it t
    12·1 answer
  • In a binary star system, an unseen component is found to have 8 solar masses. It would be visible if the system were a normal st
    9·1 answer
  • 9. A car driver brakes gently. Her car slows down front --
    11·1 answer
  • Is it First or Second law Newtons law? Fill in the blanks
    12·2 answers
  • Cho lực F ⃗=6x^3 i ⃗-4yj ⃗ tác dụng lên vật làm vật chuyển động từ A(-2,5) đến B(4,7). Vậy công của lực là:
    7·1 answer
  • What is the mass of an object moving at a speed of 10.0 m/s with a kinetic energy of 760 J?
    7·1 answer
  • The moon is 384,403 km from the earth how many quarters laid end to end it would take to reach the moon if a quarter has a diame
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!