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posledela
3 years ago
14

PLEASE............PLEASE.............PLEASE HELPPPPP

Physics
2 answers:
Fiesta28 [93]3 years ago
6 0
C would be the answer to that
Anna35 [415]3 years ago
6 0
The answer is a), it uses sound waves to bounce of the ocean floor and it calculates the time it takes for the waves to come back up. They then can figure out the depth by using this
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In a tank full of water, the pressure on a surface 2 meters below the water level is 1.5 kPA. What's the pressure on a surface 6
Lina20 [59]

Answer:

P = 40.7kPa

Explanation:

To find the pressure on a surface 6 meter below you use the following formula, which takes into account the heights in which pressures are measured and also the density of the fluid and the gravitational acceleration:

P_2-P_1=-\rho g(y_2-y_1)             (1)

P2: pressure for a height of -6 m = ?

P1: pressure for a height of -2 m = 1.5kPa = 1500 Pa

ρ: density of water = 1000kg/m^3

g: gravitational acceleration = 9.8 ms^2

y2: -6m

y1: -2m

(the height is measure from the water level, because of that, the heights are negative)

You solve the equation (1) for P1:

P_1=P_2-\rho g(y_2-y_1)         (2)

Next, you replace the values of all variables in equation (2):

P_2=1500Pa-(1000kg/m^3)(9.8m/s^2)(-6-(-2))m=40700Pa\\\\P_2=40.7kPa

hence, the pressure on a surface 6 m below the water level is 40.7kPa

5 0
3 years ago
Help me guys<br><br>Class IX​
goldfiish [28.3K]

Answer:

with right hand grip rule

3. A- south

B- north

C- north

D- south

E- south

F- north

sorry idk what 1st & 2nd question means

4 0
2 years ago
Typically during thunderstorms most lightning strikes carry a negative electric charge; only a few carry a positive charge. Thun
Ierofanga [76]

Answer:<em> Option (D) is correct.</em>

Explanation:

Considering the hypothesis elaborated in this comprehension, it's given that areas that tend to lie near forest fires usually have extra positive strikes since smoke carries positively charged particles. In rudimentary term, this states that occurrence of positively charged particles will result in extra positive strikes.

Option (D) states that occurrence of extra positive strikes will be there even weeks after the charge of smoke particles have been dissociated.

Therefore this option, most seriously undermines the hypothesis.

7 0
3 years ago
Nuclear power doesn't directly emit greenhouse gases, but it does leave behind dangerous nuclear _______.
Morgarella [4.7K]

Answer:

radioactive waste?

Explanation:

6 0
3 years ago
A waiter is carrying a tray above his head and walking at a constant velocity. If he applies a force of 5.0 newtons on the tray
Darya [45]
In physical terms, a force does work if it moves an object in the direction the force is pointing towards.

In your example, the force is pushing a tray up. But the force doesn't move the tray any further up. It remains at the same height. 

The is no force done by this force.
3 0
3 years ago
Read 2 more answers
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