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Marina CMI [18]
4 years ago
15

In order for exercise to be effective, it must substantially increase heart rate. True False

Physics
2 answers:
jek_recluse [69]4 years ago
8 0

Actually the answer was False, I just took the test. This was the only one I missed.

sweet [91]4 years ago
6 0
The answer is true. I just did it.

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what happens to the current across a circuit when the voltage is doubled while the resistance is held back ​
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Since the current is inversely propotional to its resistance, when the voltage is doubled the current will be one-half

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3 years ago
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If a truck weighs 195,000N what is the mass of the truck
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Answer:

19500kg

Explanation:

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3 years ago
A student releases a ball from rest on an inclined plane and measures that it travels a distance of 0.6 m in a time of 4.0 s. Fi
Korvikt [17]

The average speed of the ball is 0.15 m/s.

The average speed of the ball can be calculated using the formula below.

<h3 /><h3> Average speed: </h3>

This is the ratio of the total distance to the total time traveled by a body

<h3 /><h3>Formula:</h3>
  • S = d/t.................. Equation 1

<h3>Where:</h3>
  • S = Average speed
  • d = total distance
  • t = total time.

From the question,

<h3>Given:</h3>
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  • t = 4.0 s

Substitute these values into equation 1

  • S = 0.6/4
  • S = 0.15 m/s

Hence, the average speed of the ball is 0.15 m/s.

Learn more about average speed here: brainly.com/question/4931057

8 0
3 years ago
A cat lies on the floor. can you say that no force acts on the cat? or is it correct to say that no net force acts on the cat? e
DIA [1.3K]

Odd though it seems at first, gravity is pulling the cat down while the floor is pushing the cat up - in equal amounts. Forces are absolutely acting on the cat but they balance - so there is no net force.  


5 0
3 years ago
a mercury in glass thermometer reads -20° at the ice point and 100°at the steam point. calculate the Celsius temperature corresp
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So you have 1.2 deg U / 1 deg C

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Or 58.3deg C * 1.2 deg U / 1 deg C = 70 deg U

4 0
3 years ago
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