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Anvisha [2.4K]
3 years ago
11

An object with a mass of 7 kg accelerates 5 m/s2 when an unknown force is applied to it. What is the unknown force?

Physics
1 answer:
Leto [7]3 years ago
4 0

Answer:

35 N

Explanation:

Force, F = ma where m = mass = 7 kg and a = acceleration = 5 m/s².

So, F = ma = 7 kg × 5 m/s² = 35 N

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A certain resistance thermometer read 14.5 ohms in pure melting ice and 18.5 ohms in steam at standard atmospheric pressure what
Vadim26 [7]

The resistance of the thermometer at room temperature is 15.04 ohms.

<h3 />

<h3>What is a resistance thermometer?</h3>

A resistance thermometer is a type of thermometer that measures temperature through a change in resistance.

To calculate the resistance of the thermometer at room temperature, we use the formula below.

Formula:

  • 100/27 = 2/(x-14.5)..............Eqquation 1

Where:

  • x = Resistance of the thermometer at room temperature

Make x the subject of the equation

  • x = [(27×2)/100]+14.5
  • x = (54/100)+14.5
  • x = 0.54+14.5
  • x = 15.04 ohms.

Hence, The resistance of the thermometer at room temperature is 15.04 ohms.

Learn more about thermometers here: brainly.com/question/1531442

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2 years ago
1. Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C, what could be the reason?
umka2103 [35]

Answer:

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Explanation:

The reason here is water only boils at sea level. This means that if you move water to a different height, say top of a mountain, the boiling temperature of water would change. This is due to the pressure drop at high place. The drop of pressure would make it harder to transform water liquid to gas, thus requiring more temperature.

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What shape is the Milky way galaxy
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It appears to be a <span>spiral shape. </span>
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What can electromagnetic waves travel through?
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Electromagnetic waves do not require a medium to travel through. They can travel through empty space or matter.
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