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3 years ago

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A force of 125n is applied to a 50kg. Mass what is the assceleration of the mass

1 answer:

spayn [35]3 years ago

3 0

F=ma
F=125 N
m= 50 kg
125=50a
a=2.5 m/s^2

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A battery with an internal resistance ofrand an emf of 10.00 V is connected to a loadresistorR=r. As the battery ages, the inter

yanalaym [24]

Answer:

The current is reduced to half of its original value.

Explanation:

Assuming we can apply Ohm's Law to the circuit, as the internal resistance and the load resistor are in series, we can find the current I₁ as follows:

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where Rint = r and RL = r
Replacing these values in I₁, we have:

$I_{1} = \frac{V}{R_{int} +r_{L} } = \frac{V}{2*r} (1)$

When the battery ages, if the internal resistance triples, the new current can be found using Ohm's Law again:

$I_{2} = \frac{V}{R_{int} +r_{L} } = \frac{V}{(3*r) +r} = \frac{V}{4*r} (2)$

We can find the relationship between I₂, and I₁, dividing both sides, as follows:

$\frac{I_{2} }{I_{1} } = \frac{V}{4*r} *\frac{2*r}{V} = \frac{1}{2}$

The current when the internal resistance triples, is half of the original value, when the internal resistance was r, equal to the resistance of the load.

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3 years ago

A bus slows with constant acceleration from 24.0 m/s to 16.0 m/s and moves 50.0 m in the process. (a) How much further does it t

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Answer:

(a) Bus will traveled further a distance of 40 m

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Explanation:

We have given initial velocity of the bus u = 24 m/sec

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Distance traveled in this process s = 50 m

From third equation of motion we know that $v^2=u^2+2as$

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s= 90 m

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Initial velocity u = 24 m/sec

Acceleration $a=-3.2m/sec^2$

So time $t=\frac{v-u}{a}=\frac{0-24}{-3.2}=7.5sec$

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3 years ago

An incompressible fluid flows at .252 m/s through a 44 diameter (circular cross section) pipe. The pipe widens to a square cross

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ANSWER:

The easiest way to get a fairly accurate measure of your water flow rate is to time yourself filling up a bucket. So for example if you fill up a 10 litre bucket in 1.5 minutes, then your flow rate will be: 10/1.5 = 6.66 Litres per minute.

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2 years ago

Explain why ionic compounds are neutral even though they are made up of charged particles

Lelechka [254]

Ionic compounds are made up of two charged species, a cation (+) and an anion (–).

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3 years ago

The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 7.00 s, at which time it

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Answer:

The no. of revolutions does the tub turn while it is in motion is = 52.51 revolutions

Explanation:

Given data

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$\omega_2^{2} = \omega_1^{2} + 2 \alpha \theta_1$

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$\alpha = \frac{d \omega}{dt}$

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We know that from the equation of motion

$\omega_2^{2} = \omega_1^{2} + 2 \alpha \theta_2$

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Therefore the no. of revolutions does the tub turn while it is in motion is = 52.51 rev

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3 years ago