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givi [52]
3 years ago
14

a 13 kg sled is moving at a speed of 3.0 m/s. at which of the following speedss will the sled have tace as mucb as the kinetic

Physics
1 answer:
mamaluj [8]3 years ago
6 0
A 13-kg sled is moving at a speed of 3.0 m/s. At which of the following speed will the sled have twice as much kinetic energy?

4.2 m/s
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Explanation:

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Shantel has a very specific goal to marry a man with inherited wealth. As a consequence, whenever she meets new prospective mate
ICE Princess25 [194]

Answer:

explicit cognition

Explanation:

Based on the information provided within the question it seems that Shantel is using explicit cognition to categorize her prospective mates. This term refers to the assumptions or judgments made by an individual based on propositional attitudes or beliefs of certain thoughts. Such as what Shantel is doing by judging the new men that she meets based on her belief that they must have certain material indicators to show that they are wealthy.

6 0
4 years ago
A 50.0-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300 and the
Dimas [21]

Answer:

98N and 147N

Explanation:

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m=50kg\\\mu_s =0.4\\\mu_k = 0.2\\F=140N

We can find the static fricton force as follow,

F=\mu_s * N

Where N is the normal force (mg)

F=0.3*50*9.8\\F=147N

Static friction force at 147N is greater than the force applied hence body does not move.

F=\mu_k N = 0.2*50*9.8= 98N

3 0
4 years ago
3. In what circumstance will a flash of lightning travel through the sky and<br> touch the ground?
alexgriva [62]

Answer: The answer is both. Cloud-to-ground lightning comes from the sky down, but the part you see comes from the ground up. A typical cloud-to-ground flash lowers a path of negative electricity (that we cannot see) towards the ground in a series of spurts.

Explanation:

5 0
2 years ago
if pes represents the potential energy stored in a spring in kg•m^2/s^2 and x represents the change in the springs length from i
musickatia [10]
Unit for x - the change in the spring length:
x = [ m ]
PE s =  1/2 k x²
[ kg m² / s² ] = 1/2 k * [ m² ]   /: m²
k = [ kg / s² ]
Answer: The unit for spring constant k is kg/ s²
8 0
3 years ago
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