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Lesechka [4]
2 years ago
8

What should you do when fueling an outboard boat with a portable tank?

Physics
2 answers:
bonufazy [111]2 years ago
7 0

Answer:

Connect the outboard boat to the earth

Explanation:

During re-fueling, small charges are generated. These charges result in some small electrostatics being generated. The generated static energy results in small electric sparks. If the object is not properly earthed, the will be a fire even from a very small spark. Thus, an earth system is needed to prevent a fire from taking place. The earth absorbs excess electrons. This prevents fires from taking place.

olasank [31]2 years ago
4 0
The portable tank should be connected to earth to neutralise rhe charges to prevent sudden discharge which may cause sparks and lead to fire.
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One consequence of Newton's third law of motion is that __________. A. Every object that has mass has inertia B. A force acting
vovangra [49]

Answer:

B

Explanation:

a force acting upon an object increases that objects acceleration

8 0
2 years ago
How do you know the earth is rotating on its axis
cupoosta [38]

Answer:

Read below!

Explanation:

You can watch the sun wheel across the sky during the day, and the stars at night. Focus a telescope on any star besides the north star--especially southern stars--and you can watch them drift across your field of view.  

An alternative explanation is that all the stars are painted on (or holes in) some canopy that rotates around the earth. This explanation does not account for the motion of the "wanderers," or planets, as the Greeks called them, or for the path of the moon among the stars.  

As we know the stars are massive bodies of significant and varying distance to the earth, the notion they all swing around us in unison seems highly implausible

4 0
3 years ago
A 2200 kilogram car is accelerating at 3.4 m/s/s. what is the NET force?
sdas [7]
We Know, F = m*a
F = 2200 * 3.4
F = 7480 Kg m/s²

So, your final answer is 7480
7 0
3 years ago
The bending of waves as they pass between media is called .?
Rufina [12.5K]

Refraction is the change in direction of waves that occurs when waves travel from one medium to another. Refraction is always accompanied by a wavelength and speed change. Diffraction is the bending of waves around obstacles and openings.

6 0
2 years ago
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A block sliding across a level surface has a mass of 2.5 kg and a mechanical energy of 20 joules. What is its velocity?
tia_tia [17]
Hi!

The energy of the block is 4 m/s

To calculate this, you need to use the equation for kinetic energy. The block is sliding (i.e. it's moving). If the object is sliding across a level surface, the only energy it has is kinetic energy, because there is no change in potential energy (which changes with height). So, the mechanical energy will be pure kinetic energy. The equation is the following, derived from the expression for kinetic energy:

v= \sqrt{ \frac{2*Ke}{m}}=\sqrt{ \frac{2*20 (kg*m^{2}*s^{-2}) }{2,5kg}}=4 m/s

Have a nice day!
8 0
3 years ago
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