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Fittoniya [83]
3 years ago
6

How does electronic duster work​

Physics
2 answers:
Ostrovityanka [42]3 years ago
5 0

Answer:

it moves back and forth

Explanation:

Darina [25.2K]3 years ago
3 0

Answer:

it moves back and fourth and gets all the dust away

Explanation:

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The nuclues of an atom contains which subatomic particles
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Protons and neutrons. Explanation:
Protons are massive, positively charged
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The total number of protons and neutrons in an atom's nucleus is called 5
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6 0
3 years ago
A force of attraction would exist between
siniylev [52]

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A. positively charged object and a negatively charged object.

3 0
4 years ago
A large box has a mass of 500kg and the coefficient of static friction for the box and the floor is 0.45, and the coefficient of
Mumz [18]
A) The friction force while the box is stationary is (the coefficient of static friction)*(the normal force). In this case, the normal force is equal to the gravitational force, or the weight. To move the box, we need a minimum horizontal force that is equal to the friction force. The weight is (500 kg)*(9.81 m/s^2)= 4905 N. So, (0.45)*(4905 N) = 2207.25 N.

b) The acceleration will be the horizontal force - the kinetic friction force (since they act in opposite directions) divided by the mass. Kinetic friction force = (coefficient of kinetic friction)*(normal force or weight). 

F(net) = (2207.25 N)-(0.30)(4905 N) = 735.75 N

a = (735.75 N)/(500kg)= 1.4715 m/s^2
4 0
3 years ago
44. The maximum horizontal distance a boy can throw a ball is 50 m. Assume he can throw with the same initial speed at all angle
tensa zangetsu [6.8K]

The maximum height reached by the ball thrown by the boy is determined as 12.5 m.

<h3>Angle of the projection</h3>

The angle of projection of the ball is calculated as follows;

R = u²sin2θ/g

  • at maximum range, θ = 45 degrees

50 =  u²/9.8

u² = 50 x 9.8

u² = 490

u = 22.14 m/s

<h3>Maximum height of the ball</h3>

H = u²sin²θ/2g

H = (22.14² x (sin45)²)/(2 x 9.8)

H = 12.5 m

Thus, the maximum height reached by the ball thrown by the boy is determined as 12.5 m.

Learn more about maximum height here: brainly.com/question/12446886

#SPJ1

5 0
2 years ago
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