1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maksim [4K]
3 years ago
13

In this ecosystem, squirrels find and eat acorns from trees. What would happen to the balance of the ecosystem if populations of

squirrels decreased?
A.) The number of acorns would increase.


B.) The number of acorns would decrease.

C.) The number of acorns would stay the same.


D.) The number of acorns would decrease and then increase.

Physics
1 answer:
Marizza181 [45]3 years ago
7 0

<em><u>Answer</u></em>

The answer would be B.

You might be interested in
i'm begging ya'll i posted this about 3 times already and i'm really stuck. can someone please give me the answers to the cart?
Vedmedyk [2.9K]

Answer:

just put the molecules and atoms where they belong

Explanation:

4 0
2 years ago
Look at the potential energy diagram for a chemical reaction. Which statement correctly describes the energy changes that occur
lukranit [14]

The activation energy is 10 kJ and the reaction is exothermic.

8 0
3 years ago
One advantage to using this form of circuit is that
777dan777 [17]
It has to be the last one because whenever lights are turned on it decreases because all lights are on at the same time. It's good to just have one light on. It doesn't use as much electricity.
8 0
3 years ago
the ratio of the energy per second radiated by the filament of a lamp at 250k to that radiated at 2000k, assuming the filament i
Naily [24]

Answer:

(a) \frac{P_{250k}}{P_{2000k}}=2.4\ x\ 10^{-4}

(b) P =  0.816 Watt

Explanation:

(a)

The power radiated from a black body is given by Stefan Boltzman Law:

P = \sigma AT^4

where,

P = Energy Radiated per Second = ?

σ = stefan boltzman constant = 5.67 x 10⁻⁸ W/m².K⁴

T = Absolute Temperature

So the ratio of power at 250 K to the power at 2000 K is given as:

\frac{P_{250k}}{P_{2000k}}=\frac{\sigma A(250)^4}{\sigma A(2000)^4}\\\\\frac{P_{250k}}{P_{2000k}}=2.4\ x\ 10^{-4}

(b)

Now, for 90% radiator blackbody at 2000 K:

P = (0.9)(5.67\ x\ 10^{-8}\ W/m^2.K^4)(1\ x\ 10^{-6}\ m^2)(2000\ K)^4

<u>P =  0.816 Watt</u>

7 0
3 years ago
24. An elevator is moving vertically up with an acceleration a. The force exerted on the floor by a passenger of mass m is
Wewaii [24]

<u>Given </u><u>:</u><u>-</u>

  • An elevator is moving vertically up with an acceleration a.

<u>To </u><u>Find</u><u> </u><u>:</u><u>-</u>

  • The force exerted on the floor by a passenger of mass m .

<u>Solution</u><u> </u><u>:</u><u>-</u>

As the man is in a accelerated frame that is <u>non </u><u>inertial</u><u> frame</u><u> </u>, we would have to think of a pseudo force .

  • The direction of this force is opposite to the direction of acceleration the frame and its magnitude is equal to the product of mass of the concerned body with the acceleration of the frame .

For the FBD refer to the attachment . From that ,

\implies Weight_{apparent}= mg + ma

<u>Hence</u><u> </u><u>option</u><u> </u><u>d </u><u>is </u><u>correct</u><u> </u><u>choice </u><u>.</u>

<em>I </em><em>hope</em><em> this</em><em> helps</em><em> </em><em>.</em>

3 0
2 years ago
Other questions:
  • I need help with a physics test, can someone help i am willing to pay.
    11·1 answer
  • What element would a metal, like sodium, most likely combine with?
    13·2 answers
  • Why is the current atomic model called the "electron cloud model?
    8·1 answer
  • What are the three ways to lessen any risk?
    7·2 answers
  • If the effects of heat and friction are ignored, the amount of work output is always _______ the amount of work input, even when
    7·1 answer
  • Which of these is NOT a line on the tennis court?
    10·2 answers
  • What discoveries support the idea of continental drift?
    6·2 answers
  • Which symbol and unit of measurement are used for resistance?
    14·2 answers
  • Two 20kg spheres are placed with their
    10·1 answer
  • Hello people~
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!