3 years ago

Relative motion can best be defined as

1 answer:

6 0

Relative motion is the motion of an object relative to another object,
or as it would appear to an observer stuck to the other object and
riding on it.

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Two of the angles in a triangle are complementary. The third angle is twice the measure of one of the complementary angles. What

Marrrta [24]

Explanation:

Let the 2 be X and Y.

Z is 3rd angle.

Z=2X

w.k.t Sum of angles in a triangle is 180°

Z+X+Y=180°

2X+90°=180°

2X=90°

=>X=45°

=>Y=90°-45°=45°

=>Z=2X=2(45°)=90°

Hope this helps you.

6 0

3 years ago

Your car's 30.0 W headlight and 2.50 kW starter are ordinarily connected in parallel in a 12.0 V system. What power (in W) would

Tatiana [17]

Answer:

<h3>The power of headlight in series connection is 29.64 W</h3>

Explanation:

Given :

Power of headlight $P_{1} = 30$ W

Power of starter $P_{2} = 2500$ W

Voltage of headlight and starter $V = 12$ V

From equation of power,

$P = \frac{V^{2} }{R}$

$R = \frac{V^{2} }{P}$

For finding the resistance of headlight and starter,

⇒ For headlight,

$R_{1} = \frac{144}{30} = 4.8$ Ω

⇒ For starter,

$R_{2} = \frac{144}{2500} = 0.057$ Ω

Since equivalent resistance,

$R_{eq} = R_{1} + R_{2} + ........$

$R_{eq} = 4.8 +0.057 = 4.857$ Ω

So power in series is given by,

$P_{s } = \frac{V^{2} }{R_{eq} } = \frac{144}{4.857}$

$P_{s } = 29.64$ W

8 0

4 years ago

In an inelastic collision involving an isolated system, the final total momentum isA) more than the initial momentum.B) exactly

damaskus [11]

I think that the answer is C

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3 years ago

When dolphin swims close to its prey, it transmits sound waves to figure out details (like direction where the fish is moving) o

svet-max [94.6K]

Answer:

The frequency of the waves depends on the distance between wave fronts - considering a front as a maximum disturbance of the wave

(Consider the waves emitted by an organ pipe: condensation and rarefactions)

The waves themselves are a fixed distance apart -

as one moves towards the source the waves received will be closer together (higher frequency)

So if the frequency received increases, the distance between the source and the observer must be decreasing

8 0

3 years ago

A skateboarder rolls horizontally off the top of a staircase and lands at the bottom. The staircase has a horizontal length of 1

TiliK225 [7]

Answer: 18.8 m/s

Explanation:

3 0

3 years ago