How do whales bats and dolphins use echolocation?A To scare away predators
B To attract mates
C To orient them selves and find food
D To tell animals of there species where they are

Answers

Answer 1

Answer: C is your answer ithink

Answer 2

Answer: I think ur answer is c

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The factor being measured in an experiment is thea. Scientific law
B. Variable
C. Control
D. Hypothesis

Answers

The factor being measured in the experiment is a variable B.

(please show work)A rock is dropped off of a cliff. It falls to the ground in 10 seconds. Answer the following questions assuming that there is no air resistance.

c. What is the instantaneous velocity of the rock just before it hit the ground?

d.Find the rock's displacement for the 10 seconds.

Answers

c. -98 m/s

The motion of the rock is a uniformly accelerated motion (free fall) with constant acceleration $g=-9.8 m/s^2$ (negative since it is downward). Therefore, we can find its velocity using the following suvat equation

$v=u+gt$

where

v is the final velocity

u is the initial velocity

g is the acceleration of gravity

t is the time

For the rock in the problem,

u = 0

So, its velocity at t = 10 s is

$v=0+(-9.8)(10)=-98 m/s$

where the negative sign indicates that the velocity points downward.

d. -490 m

Since the motion is at constant acceleration, we can use another suvat equation:

$s=ut+(1)/(2)gt^2$

where

s is the displacement

u is the initial velocity

g is the acceleration of gravity

t is the time

Substituting:

u = 0

$g=-9.8 m/s^2$

t = 10 s

We find the rock's displacement:

$s=0+(1)/(2)(-9.8)(10)^2=-490 m$

where the negative sign means the displacement is downward.

Two identical space probes are orbiting Jupiter. Scientists determine that one of the space probes has a larger gravitational force acting on it than the other. which of the following is the most likely reason for the difference?A. One space probe reached Jupiter before the other.
B. One space probe has more air resistance than the other.
C. Only one space probe is exerting a gravitational force on the other.
D. One space probe is closer to Jupiter than the other

Answers

If the probes are identical, then the one that feels a larger gravitational
force is orbiting closer to Jupiter than the other one is.

If they're not identical, then the one with greater mass will feel more
gravitational force than the one with less mass, even if they're both
the same distance from Jupiter. (We know this from the experimental
observation that fatter people weigh more, even on Earth.)

Answer:

The correct answer is D

Explanation:

When a river overflows its banks, it deposits sediment over a broad, flat area of land on both sides of the river. This broad flat area is called a _______.A.) channel
B.)delta
C.)valley
D.)floodplain

Answers

the answer is letter D: a floodplain

Answer:

Explanation:

Which term identifies the effects of the buildup of stationary electric charges on everyday objects caused by the transfer of electrons fromone object to another? A. stationary electricity B. current electricity C. magnetic electricity D. static electricity

Answers

D static Electicity....

Answer:Static Electricity

Explanation:

Bruce (the dog) is pulling on his lead with a force of 40N at an angle of 26º below the horizontal. Show that the horizontal component of this force is about 36N.Help???