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kirza4 [7]
3 years ago
5

What is a coil of wire with a current running running through it

Physics
1 answer:
sergiy2304 [10]3 years ago
3 0
The answer is Solenoid
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A. What is an electric field line?
Lorico [155]

Answer:

Please see below as the answers are self-explanatory

Explanation:

a)

  • A electric field line is an imaginary line, which has the property that the electric field vector is tangent to it at any point. It starts from positive charges (since the electric field by convention it has the direction of the trajectory that would take a positive test charge, so it always goes away from positive charges) and ends in negative charges.

b)

  • Since the potential difference between two points represents the work per unit charge needed for a charge to move between these points, a equipotential surface is the one over which it is not needed to do work to move a charge from any point on the surface to any other point, which means that all points are at the same potential.

c)

  • Equipotential surfaces are not necessarily physical surfaces, they can be defined in vaccum for instance.
  • As an example, any spherical surface concentric with a point charge, is an equipotential surface, and  it can be a real surface or a fictitious one.
7 0
3 years ago
according to newton's first law, massive objects have _____ inertia than small objects, which means it takes more force to move
Ksenya-84 [330]
According to newton's first law, massive objects have larger inertia than small objects, which means it takes more force to move bigger things than smaller ones.
4 0
3 years ago
Read 2 more answers
A gas-turbine power plant operating on the simple Brayton cycle has a pressure ratio of 7. Air enters the compressor at 0°C and
Ivahew [28]

Answer:

Answers of the Both parts  are in the following attachment

Explanation:

         

4 0
2 years ago
A ball is projected into the air. Where is potential energy the greatest? A) A. B) B. C) C. D) A. and C.
Ksju [112]

The point with the greatest potential energy is B.

The potential energy of an object is depends on the relative distance between the object and the ground and its mass. The higher the object is from the ground the greater the potential energy posses.

Potential energy (P.E) = mgh

Where m is the mass, g is the gravity and h is the height from the ground to where the object is.

Since the mass and gravity is constant in this case, only the height will determine the point with the greatest P.E and that point is B.

5 0
2 years ago
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While visiting the Albert Michelson exhibit at Clark University, you notice that a chandelier (which looks remarkably like a sim
aksik [14]

Answers:

a) 0.144 Hz

b) 0.904 rad/s

c) 11.818 m

d)9.77 m/s^{2}

Explanation:

The rest of the question is written below:

a) Calculate the frequency of oscillation (in Hertz) of the chandelier

b) Calculate the angular frequency \omega of the chandelier in radians/ second

c) Determine the length L in meters of the chandelier

d) That evening, while hanging out in JJ. Thompson's House O' Blues, you notice that (coincidentally) there is a chandelier identical in every way to the one at the Michelson exhibit except this one swings back and forth 0.01 seconds slower, so the period is T+0.01 s. Determine the acceleration due to gravity in m/s^{2} at the club.

a) The frequency f has an inverse relation with the period T:

f=\frac{1}(T} (1)

Where T=6.9 s

f=\frac{1}(6.9s}=0.144 Hz (2)

b) The angular frequency \omega is given by:

\omega=2\pi f=\frac{2 \pi}{T} (3)

\omega=2\pi (0.144 Hz) (4)

\omega=0.904 rad/s (5)

c) Another expression for the period is:

T=2 \pi \sqrt{\frac{L}{g}} (6)

Where:

L is the length of the pendulum

g=9.8 m/s^{2} is the mean acceleration due gravity

Isolating L:

L=\frac{T^{2} g}{4 \pi^{2}} (7)

L=\frac{(6.9)^{2} (9.8 m/s^{2})}{4 \pi^{2}} (8)

L=11.818 m (9)

d) In this case the period of the pendulum is T_{p}=T+0.01 s. So, we will use equation (7) with this period and find g:

g=\frac{4 \pi^{2}L}{(T+0.01 s)^{2}} (10)

g=\frac{4 \pi^{2}(11.818 m)}{(6.9 s+0.01 s)^{2}} (11)

g=9.77 m/s^{2} (12) This is the acceleration due gravity at the place, which is near the mean value of 9.8 m/s^{2}

5 0
3 years ago
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