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allochka39001 [22]
3 years ago
11

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential t

o lower potential?
A.
The kinetic energy increases.
B.
The kinetic energy decreases.
C.
The kinetic energy remains the same.
D.
The kinetic energy is always zero.
​
Physics
1 answer:
77julia77 [94]3 years ago
7 0

Answer:The kinetic energy will decrease.

Explanation:As potential energy increases kinetic energy will increase, as kinetic or potential energy decreases, the kinetic or potential energy will decrease

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vivado [14]
Answer is C...........
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If a magnetic field is to exert a force on a current-carrying wire, the field must have some vector component:
mash [69]

Answer:

D.) perpendicular to the current

i am 100% sure :)

3 0
4 years ago
Assuming atmospheric pressure to be 1.01 x 10^5 Pa and the density of sea water to be 1025 kg/m^3, what is the absolute pressure
Rudik [331]
To solve for absolute pressure, you will need this formula:

P_{total}  = P_{atm} + (rgh)

Where: P_{total} = absolute pressure
             P_{total} = atmospheric pressure
             r (rho) = density
             g  = acceleration due to gravity constant 9.8  \frac{m}{ s^{2} }
             h = depth (in this case)

rgh is the formula for pressure of fluids

So with your given, we just need to insert it into the formula:

P_{total} = P_{atm} + (rgh)
P_{total} = 1.01 x 10^{5} x (1,025 \frac{kg}{m^3} x 9.8 \frac{m}{{s^2}} x 15 m
P_{total} = 1.01 x 10^{5} + 150,675
P_{total} = 1.01 x 10^{5} + 1.51 x 10^{5}

P_{total} = 2.52 x 10^{5} This is your absolute pressure.



3 0
3 years ago
The orbital velocity of the Earth about the sun is 30 km/s. If the Earth were suddenly stopped in its tracks, it would simply fa
soldi70 [24.7K]

Answer:

Planet will crash on to the Sun if the tangential velocity becomes zero and Rocket should be fired  from Earth's orbit is at 30 m/s and in opposite direction to the Earth orbits the Sun

Explanation:

The orbital velocity of the Earth about the sun is 30 km/s. If we shoot a rocket with 30 km/s with respect to Earth in the opposite direction.  Then the two velocity vectors cancel. The resultant velocity would be zero with respect to the Sun. resulting velocity is called as tangential velocity.

Planet will crash on to the Sun if the tangential velocity becomes zero and Rocket should be fired  from Earth's orbit is at 30 m/s and in opposite direction to the Earth orbits the Sun

4 0
4 years ago
Classes are canceled due to snow, so you take advantage of the extra time to conduct some physics experiments. You fasten a larg
valentina_108 [34]

Answer:

-time it takes for the sled to come to a stop after launch of rocket = 7.244 s

-distance sled has travelled from its starting point by the time it finally comes to rest is = 234.8655 m

Explanation:

From the question, looking at the motion while accelerating, we have;

Initial velocity; u = 0 m/s

Acceleration; a = 13.5 m/s²

Time; t = 3.3 s

Let's use first equation of motion to find final velocity (v).

v = u + at

v = 0 + (13.5 × 3.3)

v = 44.55 m/s

In this forward direction, let's calculate the displacement(d1) using newton's 3rd equation of motion.

d1 = ut + ½at²

d1 = 0(3.3) + ½(13.5 × 3.3²)

d1 = 73.5075 m

Now, let's consider the motion while slowing down and our final velocity will be 0 m/s while initial velocity will now be 44.55 m/s while acceleration is 6.15 m/s².

Thus, from v = u + at, we can find the time it take for the sled to come to a stop.

Now, since it's coming to rest acceleration will be negative. Thus;

0 = 44.55 + (-6.15t)

0 = 44.55 - 6.15t

t = 44.55/6.15

t = 7.244 s

Now we want to find out how far the sled has travelled from its starting point by the time it finally comes to rest.

Thus, we'll use the equation;

v² = u² + 2as

Where s will be the second displacement which we will call d2.

Thus;

0² = 44.55² + (-2 × 6.15 × s)

0 = 1984.7025 - 12.3s

12.3s = 1984.7025

s = 1984.7025/12.3

s = 161.358

Thus, d2 = s = 161.358 m

Thus, distance sled has travelled from its starting point by the time it finally comes to rest is ;

= d1 + d2 = 73.5075 + 161.358 = 234.8655 m

4 0
4 years ago
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