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shusha [124]
3 years ago
14

Please help answer questions 1-4. Show your work.

Physics
1 answer:
Vera_Pavlovna [14]3 years ago
7 0

1) V = a × t, where v is the velocity, a is the acceleration and t is the time

2) Vf - Vi = a × t

So 1.3 - 1.1 = a × 20

a = 0.01 m/s²

3) Vf - Vi = a × t

0 - 2 = a × 3

a = -2/3 m/s²

4) If an object is slowing down, the acceleration is negative and vice versa.

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the last one, the third one, and the first one.

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3 years ago
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The Old Faithful geyser found in Yellowstone Park is an example of _____.
katen-ka-za [31]

Answer:

cone geyser

Explanation:

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3 years ago
Two long, straight parallel wires are placed 38 cm apart, one above the other. The top and bottom wires are carrying currents 4.
ElenaW [278]

Answer:

The force per unit length (N/m) on the top wire is 16.842 N/m

Explanation:

Given;

distance between the two parallel wire, d = 38 cm = 0.38 m

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current in the second wire, I₂ = 8.0 kA

Force per unit length, between two parallel wires is given as;

\frac{F}{L} = \frac{\mu_oI_1I_2 }{2\pi d }

where;

μ₀ is constant = 4π x 10⁻⁷ T.m/A

Substitute the given values in the above equation and calculate the force per unit length

\frac{F}{L} = \frac{\mu_oI_1I_2 }{2\pi d } = \frac{4\pi *10^{-7}*4000*8000 }{2\pi *0.38} = 16.842 \ N/m

Therefore, the force per unit length (N/m) on the top wire is 16.842 N/m

4 0
3 years ago
(a) A space vehicle is launched vertically upward from the Earth's surface with an initial speed of vi that is comparable to but
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<h3>What is law of  energy conservation?</h3>

The principle of energy conservation states that energy is neither created nor destroyed.  It may change from one sort to another. Just like the mass conservation rule, the legitimacy of the preservation of energy depends on experimental perceptions; hence, it is an experimental law. The law of preservation of energy, too known as the primary law of thermodynamics

To learn more about Energy Conservation Theory, visit;

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2 years ago
. Since the man is walking at a constant velocity, he has what acceleration
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If he’s walking at a constant velocity there is no acceleration.
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