3 years ago

Describe how matter cycles through an ecosystem

1 answer:

8 0

Water is a liquid and it evaporates into the sky as a gas and than it can fall as hail or a pond can freeze over making ice which is a solid

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The temperature of a substance depends on what two types of energy

Bezzdna [24]

Answer:

Thermal and kinetic.

Explanation:

Thermal energy is the energy generated by heat. Kinetic energy is the movement of particles in a substance which is responsible for the heat increase.

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3 years ago

What is the speed of a skater who travels a distance of 210 m in a time of 10 seconds?

Klio2033 [76]

21m per second. Take 210 divided by 10. Hope this helps!

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3 years ago

True or False? In an RL circuit, the larger the value of R (i.e. the resistance of the circuit), the longer it takes the circuit

Luba_88 [7]

Answer:

1.False

2.4 E

Explanation:

1.We have to find the statement is true or false.

We know that

Time constant, $\tau=\frac{L}{R}$

Time constant is inversely proportional to resistance R .It means when R increases then time constant decreases when R decrease then the time constant decreases.

Statement:The larger the value of R ,the longer it takes the circuit to reach its final steady- state value

It is false.

2.Energy stored in inductor,E= $\frac{1}{2}LI^2$

When I'=2I

Then, $E'=\frac{1}{2}L(2I)^2=\frac{1}{2}LI^2\times 4=4 E$

Hence,the new total energy will become 4 E.

3 0

3 years ago

A bird flies with a constant velocity of 100m/s for 10 minutes. calculate the magnitude of the displacement.

Ostrovityanka [42]

Answer:

s = ut

= 100 m/s * 10*60 s

= 60000m

= 60km

4 0

3 years ago

Read 2 more answers

A ball is released at a velocity of 400 m/s at an angle of 85 degrees from the horizontal. How far does it travel horizontally b

Karo-lina-s [1.5K]

Answer:

8000

Explanation:

V²=U²+2as

V=400m/s

U=0

a=10

s=?

(400)²=(0)²+2*10*a

160,000=20s

s=160,000/20

s=8000

5 0

3 years ago