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podryga [215]
3 years ago
8

True or False? Heat energy moves from cold areas to warm areas.

Physics
2 answers:
nadya68 [22]3 years ago
5 0
Heat travels from hot to cold.
hichkok12 [17]3 years ago
4 0
True because heat energy moves to the warmer areas.
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When the thermal energy of a material decreases, _____.
Pani-rosa [81]
The surrounding environment cool off is the answer
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3 years ago
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Infer whether a system can have kinetic energy and potential energy at the same time
Rasek [7]
Yes, an object can have both of these at the same time. Potential energy is energy that is stored in an object. Kinetic energy is the energy that is associated with motion. So what you have to have is an object that is in motion but still has more energy that it has yet to convert into kinetic energy.
4 0
3 years ago
An airplane flies between two points on the ground that are 500 km apart. The destination is directly north of the origination o
Ann [662]

Answer:

   θ = 4.78º

with respect to the vertical or 4.78 to the east - north

Explanation:

This is a velocity compound exercise since it is a vector quantity.

The plane takes a direction, the air blows to the west and the result must be to the north, let's use the Pythagorean theorem to find the speed

                  v_fly² = v_nort² + v_air²

                  v_nort² = v_fly² + - v_air²

Let's use trigonometry to find the direction of the plane

        sin θ = v_air / v_fly

        θ = sin⁻¹ (v_air / v_fly)

         

let's calculate

        θ = sin⁻¹ (10/120)

         θ = 4.78º

with respect to the vertical or 4.78 to the north-east

5 0
3 years ago
Do these four animals have invertebrates?
ira [324]
The worm is the invertebrate. All the other animals are vertebrates.
5 0
3 years ago
The speed of sound is 346m/s if a sound wave travels at a frequency of 55hz what would it’s wavelength be
algol [13]

Answer:

6.29 m

Explanation:

The speed of a wave is equal to frequency times wavelength, so to find wavelength you'd have to divide frequency by both sides, speed(346) divided frequency(55) = 6.29 m

I'm not so sure about this let me know if I'm wrong

3 0
3 years ago
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