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kvv77 [185]
3 years ago
13

Calculate the kinetic energy of a particle with a

Physics
1 answer:
topjm [15]3 years ago
6 0
K=1/2×mv²
m=3.34×10^-27
V=2.89×10^5
k=1/2 × 3.34×10^-27 ×  (2.89×10^5)²= 1/2 ×3.34×10^-27 × 8.3521×10^10=
1/2 × 27.9 × 10^-17=  13.95 × 10^-17 joule
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3 years ago
At what frequency should a 200-turn, flat coil of cross sectional area of 300 cm2 be rotated in a uniform 30-mT magnetic field t
Alexxandr [17]

Answer:

The frequency of the coil is 7.07 Hz

Explanation:

Given;

number of turns of the coil, 200 turn

cross sectional area of the coil, A = 300 cm² = 0.03 m²

magnitude of the magnetic field, B = 30 mT = 0.03 T

Maximum value of the induced emf, E = 8 V

The maximum induced emf in the coil is given by;

E = NBAω

Where;

ω is angular frequency = 2πf

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7 0
3 years ago
Can someone help me with this question
Mademuasel [1]

Answer:

Net force: 20 N to the right

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acceleration:  0.976  m/s^2

Explanation:

Since the normal force and the weight are equal in magnitude but opposite in direction, they add up to zero in the vertical direction. In the horizontal direction, the 195 N tension to the right minus the 175 force of friction to the left render a net force towards the right of magnitude:

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So net force on the bag is 20 N to the right.

The mass of the bag can be found using the value of the weight force: 201 N:

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and the acceleration of the bag can be found as the net force divided by the mass we just found:

acceleration = 20 N / 20.489 kg = 0.976  m/s^2

8 0
3 years ago
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