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4 years ago

Electricity is produced by falling water is called

Physics

1 answer:

Inessa [10]4 years ago

4 0

Electric is produced by falling water is called HYDROELECTRICITY

Hope this helps! :D

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In a ballistics test, a 24 g bullet traveling horizontally at 1300 m/s goes through a 25-cm-thick 360 kg stationary target and e

MaRussiya [10]

Answer:

A)0.00022s b)40363.6N c) 0.025m/s

Explanation:

Mass = 24g = 0.024kg, distance though the target = thickness of the target = 25cm = 0.25m

Initial speed of the bullet = 1300m/s, final speed = 930m/s

Using equation of motion

Distance = 1/2(vf+vi)*t (time in seconds)

t = 0.25*2/(1300+930) = 0.00022s

B) force exerted on the body

F = ma = m* (vf-vi)/t = 0.024*(930-1300)/0.00022

F = -40363N, it is negative because the body decelerated during this motion

C) using law of conservation of momentum,

M1*U1+ M2*U2(M2and U1 are the mass and initial speed of the body) = M1V1+ M2V2

The target was at rest so initial speed U2 = 0

0.024*1300 + 360*0 = 0.024*930 + 360*V2

31.2 = 22.32+360*V2

31.2-22.33 = 360*V2

V2 = 8.88/360 = 0.025m/s

8 0

3 years ago

In the diagram below, what do the three numbered vectors represent?

vichka [17]

1) Magnetic field
2) Electric current
3) Force

4 0

3 years ago

Read 2 more answers

You and a friend are playing with a bowling ball to demonstrate some ideas of Rotational Physics. First, though, you want to cal

RideAnS [48]

Answer:

K_{total} = 19.4 J

Explanation:

The total kinetic energy that is formed by the linear part and the rotational part is requested

$K_{total} = K_{traslation} + K_{rotation}$

let's look for each energy

linear

$K_{traslation}$ = ½ m v²

rotation

$K_{rotation}$ = ½ I w²

the moment of inertia of a solid sphere is

I = 2/5 m r²

we substitute

$K_{total}$ = ½ mv² + ½ I w²

angular and linear velocity are related

v = w r

we substitute

K_{total} = ½ m w² r² + ½ (2/5 m r²) w²

K_{total} = m w² r² (½ + 1/5)

K_{total} = $\frac{7}{10}$ m w² r²

let's calculate

K_{total} = $\frac{7}{10}$ 6.40 16.0² 0.130²

K_{total} = 19.4 J

6 0

3 years ago

What’s an example of absorption

DedPeter [7]

Soaking up spilled milk with a paper towel

7 0

3 years ago

What is the entropy change of a 0.349 g spoonful of water that evaporates completely on a hot plate whose temperature is slightl

quester [9]

Answer:

$\Delta S = 2.11 J/K$

Explanation:

As we know that entropy change for phase conversion is given as

$\Delta S = \frac{\Delta Q}{T}$

Here we know that heat required to change the phase of the water is given as

$\Delta Q = mL$

here we have

$m = 0.349 g = 3.49\times 10^{-4} kg$

L = 2250000 J/kg

now we have

$\Delta Q = (3.49 \times 10^{-4})\times 2250000$

$\Delta Q = 788.9 J$

also we know that temperature is approximately same as boiling temperature

so we have

$T = 373 k$

so here we have

$\Delta S = \frac{788.9}{373}$

$\Delta S = 2.11 J/K$

3 0

3 years ago