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Rufina [12.5K]
3 years ago
7

How much of Earth's surface is dry, ice-free land? *

Physics
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

Less than a quarter of Earth's surfaces are dry, ice free lands

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Identify the method of thermal energy transfer.
Solnce55 [7]

Answer:

A: Conduction

B: Convection

C: Radiation

Explanation:

Conduction is the transfer of heat in internal energy by microscopic collisions of particles and movement of electrons within a body so from the fire hitting the metal. Convection is the heat transfer due to the bulk movement of molecules within fluids such as gases and liquids so the water boiling in the pot. Radiation is the handle heating up due to the heat interacting with it.

5 0
3 years ago
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Balanced forces act on a ball that is being held above the ground in someone's hand. explain why these forces on the ball are ba
Licemer1 [7]
Hi Andrescruz9386

The ball in someone's hand is a balanced force because the object is staying in motion and is not changing at all so its evenly balanced, if its swinging back and fourth it is in motion and it wont stop till it becomes unbalanced, if the ball is just being held above the ground yes its balanced because nothing Is happening to it, its basically like a balance scale, if both sides are even and equal, than nothing will happen because there is no side that has more or less its equal so that's why its balanced, in order for it to be unbalanced it has to be brought upon unbalanced forces.
3 0
3 years ago
HW 3 a : Power Supply LTspice Design a resistor/LED circuit such that the diode will be brightly let when V out i s 5 volts. Ass
nadya68 [22]

Answer:

68 ohm

Explanation:

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I_{f}=\frac{V_{out}-V_{f}}{R}

0.02=\frac{5-3.65}{R}

R = 67.5 ohm

R = 68 ohm ( approx.)

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lesya692 [45]
That would be 60 hours. 
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3 years ago
I need help with the blanks
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The top 
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