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3 years ago

What happens to light when it is shone through concave lenses? (1 point)

Physics

2 answers:

Svetach [21]3 years ago

4 0

It has to be,b cause ik.

Nadusha1986 [10]3 years ago

3 0

It would be a.,.,.,.,.

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Why is it important to select a coordinate system when studying motion?

kvv77 [185]

Motion is detected when an object changes its position with respect to a reference point. Coordinate system is basically used to represent motion. A coordinate system uses numbers or coordinates which represent position of the reference points on a two-dimensional or three-dimensional space. The trajectory of a point or line can be studied on a coordinate system which describes various aspects of motion like velocity, acceleration, distance, displacement etc. Coordinate system is important because it helps to choose a starting point and the direction (which will be positive).

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3 years ago

About how much energy is transferred between a producer and primary consumer?

Elza [17]

Answer

Correct Answer is C (10% of the plant's energy is transferred

Explanation:

Ecosystem

ecosystem is a community where large number of living organisms lives. These living organism are plants, trees, different types of animals, birds etc. These living organism depends on each other for their food.

Their are various levels in ecosystem like producer, primary consumer, secondary consumer and tertiary consumer.

producer like plants produce their food on their own. And primary consumers takes their food from producers.

According to 10% Rule of ecology only 10% energy is passed from one level to another.So 10% of the plant's energy is transferred

3 0

3 years ago

Read 2 more answers

Suppose two waves collide, and the temporary combined wave that results is smaller than the original waves. what term best descr

BlackZzzverrR [31]

The collision of the two waves would bring force and that would make the new wave smaller

3 0

3 years ago

An air-track glider undergoes a perfectly inelastic collision with an identical glider that is initially at rest. what fraction

DiKsa [7]

Refer to the diagram shown below.

The initial KE (kinetic energy) of the system is
KE₁ = (1/2)mu²

After an inelastic collision, the two masses stick together.
Conservation of momentum requires that
m*u = 2m*v
Therefore
v = u/2

The final KE is
KE₂ = (1/2)(2m)v²
= m(u/2)²
= (1/4)mu²
= (1/2) KE₁

The loss in KE is
KE₁ - KE₂ = (1/2) KE₁.

Conservation of energy requires that the loss in KE be accounted for as thermal energy.

Answer: 1/2

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4 years ago

Read 2 more answers

In which process will the internal energy of the system NOT change? a. An adiabatic expansion of an ideal gas.

marusya05 [52]

Answer:

B. An isothermal compression of an ideal gas.

Explanation:

The internal energy of an ideal gas is just function of the temperature; it does not matter what other thermodynamic property changes, if the temperature does not change, the internal energy neither does. That is just for ideal gases; real gases behaviour is not like that. All of the other options bring with them an increase or decrease of the temperature:

For A, the temperature will decrease because the gas will do work as it expands, converting part of his internal energy to work.

For C, the temperature will increase, because given $PV=nRT$ , if the volume increases (expansion) and the pressure is constant, the temperature must increase to satisfy the equation.

3 0

4 years ago