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
Sati [7]
3 years ago
8

The concept that presents in the key to the past is part of the

Physics
1 answer:
Neko [114]3 years ago
3 0
The answer is uniformitarianism.
You might be interested in
In which situation is work not being done?
almond37 [142]

AS

work done =W = F.d = F d cosФ     (Ф is angle between force F and displacement d) If a body/object is moving on a smooth surface (friction-less surface ) .There is no force acting on that body.  F=0 so W=FdcosФ= (0)dcosФ ⇒ W=0

Now if a body is facing some amount of force but under the action of force there is no displacement covered. d=0 so W =FdcosФ= F(0)cosФ ⇒W=0

example:  A person is applying a force on rigid wall but wall remains at rest there is no displacement occurs in wall.

The third term upon which work done  dependent is angle between force and displacement i.e Ф. If Ф=90° then W= FdcosФ= Fdcos90⇒ W=0   ( as cos 90°=0)

5 0
2 years ago
Imagine a 15 kg block moving with a velocity of 20 m/s to the left. Calculate the kinetic Energy of this block.
ivann1987 [24]

Answer:

3000 J

Explanation:

Kinetic energy is:

KE = ½ mv²

If m = 15 kg and v = -20 m/s:

KE = ½ (15 kg) (-20 m/s)²

KE = 3000 J

3 0
3 years ago
ME PUEDEN DECIR EJERCICIOS DE RESISTENCIA AÉROBICOS Y ANAERÓBICOS POR FAAA :C ES URGENTE *Me lo explican bien pliis para saber k
Anvisha [2.4K]

Explanation:

sksksksmsmamamamamamamamama

6 0
2 years ago
A wave travels at a frequency of 387 Hz. What is<br>the period of the wave?<br>​
Ulleksa [173]

Answer:

¹/₃₈₇ second

Explanation:

<em>The period of a wave is the reciprocal of its frequency.</em>

So, simply, the frequency is ¹/₃₈₇ second(s), as that is the reciprocal of the frequency, 387 Hz.

5 0
3 years ago
Calories tell you how much energy is in a food. True or False​
IRINA_888 [86]

Answer:True. The number of calories in a food is a measure of how much potential energy that food possesses.

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • What variables show a direct relationship? Check all that apply. the speed of a car and the distance traveled the elevation abov
    7·2 answers
  • Which if these events happens first in earths polar regions
    9·1 answer
  • 48 grams 12cm^3, what would the density of the material be
    11·1 answer
  • Which of the following has the most potential energy?
    5·2 answers
  • What is the speed that is measured in speedometer to track speed violation?
    5·1 answer
  • What is the chemical formula for magnesium sulfide?
    12·1 answer
  • Which two types of air masses would likely form a subtropical jet stream?
    8·2 answers
  • Hellp.....its physics
    12·2 answers
  • How large a force is necessary to stretch a 4.0-mm-diameter steel wire from its original length by 1.0%?
    5·1 answer
  • You kick a soccer ball with a mass of 2 kg. The ball leaves your foot with a speed of 30 m/s. How much kinetic energy does the b
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!