3 years ago

Contact force that acts to resist sliding between two touching surfaces

Physics

1 answer:

Black_prince [1.1K]3 years ago

3 0

I think that the answer is friction

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Amber applies a net force of 35 N to pull her younger brother (32 kg) in a wagon (3 kg). at what rate does the wagon accerlerate

Ket [755]

Answer:

C. 1.00 m/s^2

Explanation:

We can solve the problem by using Newton's second law:

$F=ma$

where

F is the net force acting on an object

m is the mass of the object

a is its acceleration

In this case, the net force applied by Amber is F=35 N, while the total mass of the brother+the wagon is

$m=32 kg+3 kg=35 kg$

Therefore, we can re-arrange the previous equation to find the acceleration:

$a=\frac{F}{m}=\frac{35 N}{35 kg}=1.00 m/s^2$

6 0

3 years ago

An RLC circuit has a resistance of 200 Ω and an inductance of 15 mH. Its oscillation frequency is 7000 Hz. At time t = 0, the cu

MArishka [77]

Answer: 2.13 × 10^-4 A

Explanation:

Given that the RLC circuit has a resistance R = 200 Ω and an inductance L = 15 mH.

Its oscillation frequency F = 7000 Hz

The initial current I = 25 mA = 25/1000 or 25 × 10^-3 A

Since there is no charge on the capacitor, the current after complete 5 circle will be achieved by using the formula in the attached file.

Please find the attached file for the remaining explanation for the solution.

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3 years ago

Escape speed from the surface of earth is about

dezoksy [38]

<span>On the surface of the Earth, the escape velocity is about 11.2 km/s, which is approximately 33 times the speed of sound (Mach 33) and several times the muzzle velocity of a rifle bullet (up to 1.7 km/s). However, at 9,000 km altitude in "space", it is slightly less than 7.1 km/s.</span>

6 0

4 years ago

Read 2 more answers

Is gravity constant over the entire earth surface.<br>Explain why?

masha68 [24]

Gravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense. In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet's rotation

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3 years ago

Ahmad pulls a sled across level snow by 75 N . If the sled moves 15 m , how much work does Ahmad do on the sled?

Nataly_w [17]

Answer:

1125 J

Explanation:

W=F x s

= 75 x 15

=1125

4 0

3 years ago