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3 years ago

Why did the color of the peppered moth change?

Physics

2 answers:

Alex777 [14]3 years ago

6 0

The answer is B) The environment changed.

Licemer1 [7]3 years ago

3 0

Most likely due to adaptation, assuming this is a science or bio related class; more in depth the environment in which it inhabits changes over time, therefore to blend in and survive the color of the moth must change in order to camo itself with the surroundings, this will increase its chance of survival

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When a wave slows down it...

tangare [24]

a. bends away from the normal

8 0

3 years ago

Read 2 more answers

You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is

ollegr [7]

My answer was incorrect, please disregard.

4 0

3 years ago

Gwar [14]

Answer:

For 1: The correct option is Option C.

For 3: The final velocity of the opponent is 1m/s

Explanation:

During collision, the energy and momentum remains conserved. The equation for the conservation of momentum follows:

$m_1u_1+m_2u_2=m_1v_1+m_2v_2$ ...(1)

where,

$m_1,u_1\text{ and }v_1$ are the mass, initial velocity and final velocity of first object

$m_2,u_2\text{ and }v_2$ are the mass, initial velocity and final velocity of second object

For 1:

We are Given:

$m_1=150g=0.15kg\\u_1=?m/s\\v_1=0.85m/s\\m_2=3500g=3.5kg\\u_2=0m/s\\v_2=0.85m/s$

Putting values in equation 1, we get:

$(0.15\times u_1)+(3.5\times 0)=(3.5+0.15)\times 0.85\\\\u_1=20.683\approx 21m/s$

Hence, the correct answer is Option C.

For 2:

Impulse is defined as the product of force applied on an object and time taken by the object.

Mathematically,

$J=F\times t$

where,

F = force applied on the object

t = time taken

J = impulse on that object

Impulse depends only on the force and time taken by the object and not dependent on the surface which is stopping the object.

Hence, the impulse remains the same.

For 3:

Let the speed in right direction be positive and left direction be negative.

We are Given:

$m_1=240kg\\u_1=0m/s\\v_1=-1m/s\\m_2=80kg\\u_2=-2m/s\\v_2=?m/s$

Putting values in equation 1, we get:

$(240\times 0)+(80\times (-2))=(240\times (-1))+(80\times v_2)\\\\v_2=1m/s$

Hence, the final velocity of the opponent is 1m/s and has moved backwards to its direction of the initial velocity.

4 0

3 years ago

English schoolteacher who proposed the atomic theory model of matter

vodka [1.7K]

Answer:

Ernest Rutherford.

Explanation:

Ernest Rutherford

4 0

3 years ago

Which of Newton’s laws explains why your hands get red when you press them hard against a wall.

ANTONII [103]

Answer:

Newton's third law, if i'm not mistaken.

Explanation:

Any action that occurs will have a opposite and equal action. The greater the force u apply to the wall, the greater the force the wall exerts back at you, hence why ur hands become red if u try pushing extremely hard on the wall.

6 0

3 years ago