PHYSICS MIDDLE SCHOOL

A physical property that describes how something feels
Is called?

Answers

Answer 1
Answer: It's called texture, meaning how something feels.

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What energy transformation is involved in movement of muscles?
Which of the following best describes gravitational force?An attraction between two objects that have massAn attraction between two objects due to their electronsThe force that keeps atoms and molecules bound togetherThe force that keeps objects from moving when they are at rest
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A curve has a radius of 50 meters and is banked 5 degrees. The road is covered with ice and is frictionless. What is the maximum speed, in mph, a car can travel and negotiate the curve? A.) 15.65mph B.) 25.00mph C.)65.00mph D.) 6.55mph E.) None of the above

Answers

Answer:

E.) None of the above

Explanation:

Draw a free body diagram.  There are two forces acting on the car.  Normal force perpendicular to the road, and weight downward.

Sum of the forces perpendicular to the road:

∑F = ma

N − mg cos θ = 0

N = mg cos θ

Sum of the forces towards the center of the circle:

∑F = ma

N sin θ = mv²/r

mg cos θ sin θ = mv²/r

g cos θ sin θ = v²/r

v = √(gr cos θ sin θ)

Given r = 50 m and θ = 5°:

v = √(9.8 m/s² × 50 m × cos 5° × sin 5°)

v = 6.52 m/s

v = 14.6 mph

Is sand made of cells

Answers

no because it is not a living thing
No because it isn't a living creature like humans and plants hope that helped

Describe briefly difference between conduction, convection, and radiation.

Answers

The three types of heat transfer are conduction convection and radiation. Explanation:

  • Heat transfer happens only when there is said to be a temperature difference. (i.e) heat transfer occurs with a higher temperature region to a lower temperature region.
  • Heat is transferred usually via some medium in the case of convection and conduction whereas in the radiationno medium is required ( i.e it take place in a vacuum ).  
  • Conduction is a type of heat transfer that is mainly a character for the conducting and semiconducting solid material.  
  • Convection is the heat transfer method that usually takes place in the liquids and gases.  
  • Radiation is the heat transfer process in which heat is transferred via infrared or electromagnetic waves.

What unit is similar to light year

Answers

you could use miles
one light year equals 6 trillion miles

WHAT WOULD HAPPEN IF A HUMAN'S BODY TEMPERATURE WAS 98.6 DEGREES CELSIUS??

Answers

You would die you would be 209.48 Fahrenheit and being higher than 107 Fahrenheit is very bad so imagine what would happen to you :(

Answer:

You would die you would be 209.48 Fahrenheit and being higher than 107 Fahrenheit is very bad so imagine what would happen to you :(

Explanation:

If a man has a made of 83 kilograms on earth, what will the force of gravity on his body on the moon

Answers

kg are units of mass. The acceleration on the moon due to gravity is roughtly 1/6 that of earth. A more precise figure is 1.62 m/s^2

a = 1.62 m/s^2

m = 83 kg

F = ?

F = m * a

F = 83 * 1.62

F = 134.46 Moon's gravitational force on 83 kg man

On earth the force would be 83 * 9.81 = 814.23 Newtons.

the man would only weigh 13.7 kg on the moon

hope i helped:)
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Which example best demonstrates the relationship between temperature and pressure?Question 19 options: melting ice, bubbles on a pizza popping when they are cut,   bubbles forming in dough when it is heated, or evaporating water
How could you keep an objects acceleration the same if the force acting on the object were double?
Humid air is a better electrical conductor than dry air. Explain why you are most likely to receive a shock after walking across a carpet when the air is dry than when the air is humid.