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
sladkih [1.3K]
2 years ago
12

10. A diver is collecting shells under water. They see a very large and beautiful shell so they reach out to pick it up. After s

everal missed attempts to grab the shell, the diver places it in a dive bag and surfaces. At the surface the diver is surprised that the shell is smaller than they thought. Explain this phenomenon.
Physics
1 answer:
dexar [7]2 years ago
4 0

Answer:

It is the depth of the water that allowed it to be like day

Explanation:

what we see abovewater is not the actual thing or ssize we would see when insife the water

You might be interested in
What is measurement?​
Semmy [17]

Answer:

How long or wide something is

Explanation:

5 0
2 years ago
What velocity does a 2kg mass have when its kinetic energy is 16 J
alexandr402 [8]
We can use the equation for kinetic energy, K=1/2mv².
Your given variables are already in the correct units, so we can just plug in the variables and solve for v. 

K = 1/2mv²
16 = 1/2(2)v²
16 = (1)v²
√16 = v
v = 4 m/s

Therefore, the velocity of a 2 kg mass with 16 J of kinetic energy is 4 m/s.
Hope this is helpful!
7 0
3 years ago
A machine has an efficiency of 70%. How much work dose the machine do when 20,000 J of work is done on it ?
Murrr4er [49]

Answer: The machine does 14.000 J

3 0
3 years ago
Electronic flash units for camera contain a capacitor for storing the energy used to produce the flash. In one such unit, the fl
nadezda [96]

Answer:

420J

Explanation:

Power is the time rate of change in energy. Power is the ratio of energy to time. The S.I unit of power is in watts.

Given that the flash lasts for 1/675 s, power output is 2.7 * 10⁵ W. Hence:

Power = Energy / time

Substituting:

2.7 * 10⁵ W = Energy / (1/675)

Energy = 2.7 * 10⁵ W * 1/675 = 400J

Therefore the energy emitted as light is 400J.

Since the conversion of electric energy to light is 95% efficient, hence the energy stored as electrical energy is:

Energy(capacitor) = 5% of 400J + 400J = 0.05*400 + 400

Energy(capacitor) = 420J

8 0
2 years ago
A vessel that contains a gas has two pressure gauges attached to it. One contains liquid mercury, and the other an oil such as d
castortr0y [4]

Answer:

Pressure of the gas = 12669 (Pa) and height of the oil is 1,24 meters

Explanation:

First, we can use the following sketch for an easy understanding, in the attached image we can see the two pressure gauges the one with mercury to the right and the other one with oil to left. We have all the information needed in the mercury pressure gauge, so we can determine the pressure inside the vessel because the fluid is a gas it will have the same pressure distributed inside the vessel (P1).

Since P1 = Pgas, we can use the same formula, but this time we need to determine the height of the column of oil in the pressure gauge.

The result is that the height of the oil column is higher than the height of the one that uses mercury, this is due to the higher density of mercury compared to oil.

Note: the information given in the units of the fluids is not correct because the density is always expressed in units of (mass /volume)

4 0
3 years ago
Other questions:
  • a spacecraft is flying towards the moon using your knowledge of gravitational force explain the moon's gravitational pull on the
    9·1 answer
  • Which organisms develop gills from pharyngeal arches and later develop lungs to breathe on land
    7·2 answers
  • How were the fossil symbols and mountain bets helpful in deciding where to move the continenets
    11·1 answer
  • What is the formula for calculating the efficiency of a heat engine?
    8·2 answers
  • Can you give me the definition of sound wave
    7·2 answers
  • Which two concepts are Newton´s laws based on?
    6·2 answers
  • Hey girls and guys.. I AM TAKING MY FINAL RN IN CLASS!! I NEED HELP AND WUICKLY
    15·1 answer
  • Law of motion that says for every action there is an equal and opposite
    6·2 answers
  • Using the diagrams below, choose the Free Body Diagram that represents the following scenario.
    14·1 answer
  • What's the difference between mass and inertia in a tabular form​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!