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lys-0071 [83]
4 years ago
8

A car accelerate from 25m/s to 50m/s over a time of 10 second.what is acceleration of the car

Physics
1 answer:
Ann [662]4 years ago
5 0
A=(vf-vi)/t
a=(50-25)/10
a=2.5m/s^2
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A stretched string is 2.11 m long and has a mass of 19.5 g. When the string oscillates at 440 Hz , which is the frequency of the
blsea [12.9K]

Answer:

The tension of the string is 41.876 N

Explanation:

Given;

length of the string, L = 2.11 m

mass of the string, m = 19.5 g = 0.0195 kg

frequency of the wave, f = 440 Hz

wavelength, λ = 15.3 cm = 0.153 m

The velocity of the wave is given by;

v = fλ

v = 440 x 0.153

v = 67.32 m/s

Also the velocity of the wave is given by

v = \sqrt{\frac{T}{\mu} }

where;

μ is mass per unit length = 0.0195 / 2.11 = 0.00924 kg/m

T is the tension of the string

T = v²μ

T = (67.32)²(0.00924)

T = 41.876 N

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4 years ago
You learned about the general concept of parallax in Chapter 2, and the video offers a review of the basic ideas. To check your
White raven [17]

Answer:

b.

Explanation:

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7 0
4 years ago
If the magnets are brought close together, they will
murzikaleks [220]

It depends on which side. Opposites attract, so north and south would attract to each other and collide, while north and north or south and south would go away from eachother.

7 0
3 years ago
Read 2 more answers
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Given that,

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Density seawater, p (rho) = 1025 kg/m³

Gauge Pressure , P = ??

Since, we know that:

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Pressure = 1109395723.3 N/m²

or

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4 0
3 years ago
Explain why the temperature varies with distance from the Sun in this way?​
GenaCL600 [577]

Answer:

The average surface temperature decreases the further you get from the Sun because the more distant planets receive less energy/heat/sunlight per square meter of their surface. This is because the energy from the Sun spreads out (becomes less concentrated) as you travel further from the source/Sun.

Explanation:

6 0
3 years ago
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