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iVinArrow [24]
3 years ago
14

Who invented scuba?

Physics
2 answers:
sergey [27]3 years ago
6 0

Answer:

2. Mathew Maury

Explanation:

2. Mathew Maury

enot [183]3 years ago
3 0

4. Cousteau and Gagnon

Explanation:

they made the first successful scuba in 1942

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When a cup is placed on a table, which force prevents the cup from falling to the ground?
zhuklara [117]

Answer:

B. normal force

Explanation:

Because there is no frictional or resistance force. However gravitational force is applied downroad from the center of the cup thus the contact force that is perpendicular to the surface that an object contacts which is the normal force exerted upward from the table that prevents an object from falling.

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4 years ago
The intensity of light depends on the amount of *blank blank*
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3 years ago
A proton is placed in an electric field of intensity 700 N/C. What are the magnitude and direction of the acceleration of this p
olya-2409 [2.1K]

Answer:

Acceleration of proton will be a=0.67\times 10^{11}m/sec^2

Explanation:

We have given a proton is placed in an electric field of intensity of 700 N/C

So electric field E = 700 N/C

Mass of proton m=1.67\times 10^{-27}kg

Charge on proton e=1.6\times 10^{-19}C

So electric force on the proton F=qE=1.6\times 10^{-19}\times 700=1.120\times 10^{-16}N

This force will be equal to force due to acceleration of the proton

According to newton's law force is given by F = ma

So 1.67\times 10^{-27}\times a=1.120\times 10^{-16}

a=0.67\times 10^{11}m/sec^2

So acceleration of proton will be a=0.67\times 10^{11}m/sec^2

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4 years ago
A passenger train travels 295 miles in the same amount of time it takes a freight train to travel 225 miles. The rate of the pas
mina [271]

Answer:

9.3

Explanatin:

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3 years ago
A cylindrical can holds 1 liters (1000 cm^3) of liquid. How should the height and radius be chosen to minimize the amount of mat
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