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Jobisdone [24]
3 years ago
7

A brick sits on the top of a hill with a gravitational potential energy of 245 J. To determine the gravitational potential of th

e brick, we would also need to know which one of the following
Physics
1 answer:
Bogdan [553]3 years ago
5 0

Answer:

The mass of the object, its acceleration due to gravity and the distance between the top of the hill and the ground level.

Explanation:

gravitational potential energy is the energy possessed by a body under influence of gravitational force by virtue of its position.

In order to determine the gravitational potential energy of the brick, we must know the mass (m) of the brick, its acceleration due to gravity (g) since it is acting under the influence of gravitational force and the distance between the top of the hill and the ground level. (The height).

Potential energy of a body is calculated as mass × acceleration due to gravity × height.

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A 1500 kg truck is acted upon by a force that decreases its speed from 25 m/s to 15 m/s in 8 s. What is the magnitude of the for
Citrus2011 [14]

Answer:

F = 1,875 N

Explanation:

force=

\frac{change \: in \: momentum}{time \: taken}

∆H = m∆V

where ∆H ----> change in momentum.

( final momentum - initial momentum )

and ∆V ----> change in velocity

( final velocity - initial velocity )

and m ----> is mass

then f =

\frac{1500 \times (25 - 15)}{8}

= 1,875 N

4 0
3 years ago
The chart shows the masses of selected particles.
Molodets [167]

Answer: 0.2 u

Explanation:

The atomic mass of nuclide is written as a superscript. On the left (reactants) aide of the nuclear equation shown, the total atomic mass is 235.0 + 1.0 u = 236 u. On the right (products) side reaction, the total atomic mass is 137.9u + 94.9u + 3 x 1.0u = 235.8 u. Therefore, 0.2 mass units must have been converted into energy.

6 0
3 years ago
Is placing a compass near a wire with live electrical current biology, chemistry, or physics?
balu736 [363]

Answer:

Chemistry

Explanation:

8 0
3 years ago
What is an object's acceleration that takes 550.0 meters to go from 6.0 m/s to<br> 85.0 m/s?
Dvinal [7]

from,

v² = u² + 2as

where s = distance

a = (v² - u²) /2s

a = (85² - 6²) /2*550

a = 6.53m/s²

6 0
3 years ago
A voltmeter and an ammeter are used to respectively monitor the voltage across and the current through a resistor connected to a
dsp73

Answer:

(a) 95 volt

(b)  134.33 volt

(c) 10.746 volt

(d) Average delivered power is 722 watt  

Explanation:

We have given value of resistance R = 12.5 ohm

Current in the ammeter i = 7.60 A

(a) Rms voltage in the resistor V=iR=7.6\times 12.5=95volt

(b) We know that rms voltage is given by v_r=\frac{v_m}{\sqrt{2}}

v_m=\sqrt{2}v_r=1.414\times 95=134.33volt

So peak voltage will be equal to 134.33 volt

(c) Maximum current is equal to i_m=\sqrt{2}i_r=1.414\times 7.6=10.746A

(d) Average power delivered in the resistor is equal to

P = VI

So P=95\times 7.6=722watt

7 0
3 years ago
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