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antoniya [11.8K]
3 years ago
13

A 20 N force is applied to a .170kg hockey puck. What is the acceleration of the puck?

Physics
1 answer:
shutvik [7]3 years ago
4 0
You want to use the equation F=ma, so
20N=(0.170kg)a, divide 0.170 from both sides
a=117.64705..., since .170 has 3 significant figures, round to 3 significant figures
a=118 m/s²





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Describe the initial horizontal and vertical velocity of a horizontally launched projectile on Earth, as well as what happens to
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Answer:

Explained below

Explanation:

To explain this, let's consider a tennis ball being launched from the top of a very high building.

Now, if the tennis ball is launched horizontally without any upward angle but with an initial velocity of 10 m/s. In this motion, If there is no gravity, the tennis ball would continue in motion at that same speed of 10 m/s in the horizontal direction. However, in reality, gravity causes the tennis ball to accelerate downwards at a rate of 9.8 m/s for every second. This implies that the vertical velocity component is changing at the rate of 9.8 m/s every second.

Thus, after 1 second, horizontal velocity component will remain 10 m/s and vertical component will be 9.8 m/s × 1 = 9.8 m/s downwards.

Also, after 2 seconds, the vertical velocity component will remain 10 m/s, however the vertical component will now be 9.8 × 2 = 19.6 m/s downwards.

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A spring scale has a spring with a force constant of 250 N/m and a weighing pan with a mass of 0.075 kg. During one weighing, th
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elasticity stretches and can also return to it's normal size ..

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2 years ago
For the circuit in the previous part, what happens to the maximum current if the frequency is doubled and the inductance is halv
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Answer:

Following are the responses to these question:

Explanation:

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\to X_{C}=\frac{1}{W L}

for

\to X_{L}=wL

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L\longrightarrow \frac{L}{2}

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A volumetric flask made of Pyrex is calibrated at 20.0°C. It is filled to the 285-mL mark with 40.5°C glycerin. After the flask
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Answer:

V_f = 287.04 mL

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We are given the initial/original volume of the glycerine as 285 mL.

Now, after it is finally cooled back to 20.0 °C , its volume is given by the formula;

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