1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irina1246 [14]
3 years ago
6

A charged ball is moving horizontally and perpendicular to a magnetic field of 0.8 Tesla. The ball has a mass of 0.007 kg and ha

s a charge of -0.005 C. How fast must the ball be moving in order to cancel out the effect of gravity? Give the velocity as a positive number.
Physics
2 answers:
goblinko [34]3 years ago
8 0

Answer:

17.15 m/s

Explanation:

Parameters given:

Magnetic field, B = 0.8 T

Mass of ball, m = 0.007 kg

Charge of ball, q = 0.005 C

The magnetic force acting on the charged ball due to the magnetic field is given as:

F = qvBsinθ

where v = velocity of the ball and θ = angle between the horizontal and the magnetic field = 90°

The force of the ball will be in the opposite direction but of equal magnitude:

F_b = -qvBsin(90) = -qvB

To cancel out the effect of gravity, the magnetic force must be equal to the gravitational force acting on the ball:

F = mg

Therefore:

mg = -qvB

Solving for velocity, v, we have:

v = \frac{mg}{-qB}

v = \frac{0.007 * 9.8}{-(-0.005) * 0.8}

v = 17.15 m/s

The ball must be moving at a velocity of 17.15 m/s.

mezya [45]3 years ago
7 0

Answer:

8.0

Explanation:

You might be interested in
A tiger runs at 58 km/h [S]. What is the displacement of the tiger in 38 s?
Artyom0805 [142]
58 K/h = 58000/3600= 16.1 m/s
In 38 s displacement is 38x16.1= 612.2 m
3 0
3 years ago
What is the density of this liquid that has a mass of 300g and volume 600ml.
8_murik_8 [283]

Answer:

0.5

Explanation:

D = M / V

You divide 300g by 600ml and you get 0.5

(✿◠‿◠)

8 0
3 years ago
Read 2 more answers
Magnetic field lines are more concentrated at the poles of the magnet<br> True<br> False
yKpoI14uk [10]

Answer:

True! UwU

Explanation:

the magnetic field is strongest near to the poles of the magnet were the lines of flux are more closely spaced.

8 0
3 years ago
If the man falls with his knees and ankles locked, the only cushion for his fall is a 0.480 cm give in the pads of his feet. Cal
Mariulka [41]

Answer:

The average force exerted on the man by the ground therefore is 153.319.53 N

Explanation:

Given the following information

Mass of man, m = 75 kg

height of fall, h = 0.48 cm

velocity just before landing,  v = 4.43 m/s

We therefore have

The work required to break the fall is equal to the kinetic energy of motion, just before touching the ground

Work done = Energy to absorb Kinetic Energy KE = 0.5·m·v²= F·h

Where:

F = Force required to break the fall

Therefore the force, F = (0.5·m·v² )/h

= 0.5×75 kg ×(4.43 m/s)²/(0.0048 m) = 153319.53 N

The average force exerted on him by the ground is therefore

= 153319.53 N.

4 0
3 years ago
Suppose the electric field between two parallel plates kept constant but the distance between them is tripled. What happens to t
alukav5142 [94]

Answer:

The voltage increases by a factor of three.

Explanation:

7 0
3 years ago
Other questions:
  • 1. Material that is made of living cells and tissues is called________________. *<br> please help
    6·2 answers
  • A 30-gram bullet is fired and a 50-gram bullet is dropped simultaneously from the same height. Which will hit the ground first?
    5·2 answers
  • How long will it take you to pass a truck at 60 mph with oncoming traffic?
    9·2 answers
  • I need to name 20 gases in physics
    6·1 answer
  • Answer each of the following questions:
    13·1 answer
  • The blackbody curve for a star named Zeta is shown below. What is the peak wavelength for this star?
    5·2 answers
  • At each corner of a square of side l there are point charges of magnitude Q, 2Q, 3Q, and 4Q.What is the magnitude and direction
    6·1 answer
  • John uses a lever to lift a load. The load weighs 480 N which is more than John can carry by himself. However, John can lift the
    10·2 answers
  • If the period of the wave is 0.34 seconds what would be the frequency of the wave
    14·1 answer
  • The weight of a girl with a mass of 40.0 kg is_N
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!