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4 years ago

What is the maximum range of most handheld fire extinguishers? A. 50 yd B. 30 ft C. 10 ft D. 100 ft

Physics

2 answers:

alex41 [277]4 years ago

5 0

C- 10ft. Hope this helped. Have a great day! :D

olchik [2.2K]4 years ago

5 0

Hello,

I believe that they answer is 10 feet. 30 feet would be to much. 10 feet is enough because so that you wont be to close to the fire

Hope this help, and btw,the answer is C

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Different kinds of light are all around us every day, but we are invisible to it. Explain the type of light that is visible to h

frozen [14]

Answer:

The human eye can only see white visible light and it contains all the colors of the rainbow, from red to violet but visible light comes in many "colors" such as radio, infrared, ultraviolet, X-ray, and gamma-ray that are invisible to the eye. The reason that the human eye can see the spectrum is that those specific wavelengths stimulate the retina in the human eye.

Explanation:

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3 years ago

Describe how the amount of voltage applied to a circuit affects current flow.

posledela

If you’re on Usa Test Prepnor something, the answer will be C

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4 years ago

Read 2 more answers

A small 12.00 g plastic ball is suspended by a string in a uniform, horizontal electric field. If the ball is in equilibrium whe

notsponge [240]

Answer:

$Q = \frac{0.068}{E}$

where E = electric field intensity

Explanation:

As we know that plastic ball is suspended by a string which makes 30 degree angle with the vertical

So here force due to electrostatic force on the charged ball is in horizontal direction along the direction of electric field

while weight of the ball is vertically downwards

so here we have

$QE = F_x$

$mg = F_y$

since string makes 30 degree angle with the vertical so we will have

$tan\theta = \frac{F_x}{F_y}$

$tan30 = \frac{QE}{mg}$

$Q = \frac{mg}{E}tan30$

$Q = \frac{0.012\times 9.81}{E} tan30$

$Q = \frac{0.068}{E}$

where E = electric field intensity

5 0

3 years ago

A jetboat is drifting with a speed of 5.0\,\dfrac{\text m}{\text s}5.0 s m 5, point, 0, start fraction, start text, m, end tex

love history [14]

The question is incomplete. Here is the entire question.

A jetboat is drifting with a speed of 5.0m/s when the driver turns on the motor. The motor runs for 6.0s causing a constant leftward acceleration of magnitude 4.0m/s². What is the displacement of the boat over the 6.0 seconds time interval?

Answer: Δx = - 42m

Explanation: The jetboat is moving with an acceleration during the time interval, so it is a linear motion with constant acceleration.

For this "type" of motion, displacement (Δx) can be determined by:

$\Delta x = v_{i}.t + \frac{a}{2}.t^{2}$

$v_{i}$ is the initial velocity

a is acceleration and can be positive or negative, according to the referential.

For Referential, let's assume rightward is positive.

Calculating displacement:

$\Delta x = 5(6) - \frac{4}{2}.6^{2}$

$\Delta x = 30 - 2.36$

$\Delta x$ = - 42

Displacement of the boat for t=6.0s interval is $\Delta x$ = - 42m, i.e., 42 m to the left.

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4 years ago

Which statement is true about the scientific method?

dsp73

Answer: A. It follows one prescribed sequence of steps.

Explanation:

A scientific method can be define as the procedure which is required to be followed so as to prove the cause of a scientific phenomena. The scientific method usually consist of steps of experimentation procedures which are performed under controlled conditions so as to avoid any error in the observation as well as in the results. The scientific method is necessary to relate the experimental conditions with the nature.

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4 years ago