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Artyom0805 [142]
3 years ago
15

Explain how a charged rod can attract a neutral piece

Physics
1 answer:
White raven [17]3 years ago
6 0
"Charged" may mean the excess of electrons or the lack of them. If the rod is positively charged and lacks electrons, the atoms of the rod will be attracted to the electrons surrounding the neutral piece. 
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If a bowling ball has a mass of 3 kg, what is its weight?
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<span>On earth, 3 kg of mass weighs 29.4 newtons (6.61 pounds).</span>
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4 years ago
A roofer drops a nail that hits the ground traveling at 26 m/s. How fast was the nail traveling 1 second before it hits the grou
ELEN [110]
This problem can be solved using a kinematic equation. For this case, the following equation is useful:

v_final = v_initial + at

where,
v_final = final velocity of the nail
v_initial = initial velocity of the nail
a = acceleration due to gravity = 9.8 m/s^2
t = time 

First, we determine the time it takes for the nail to hit the ground. We know that the initial velocity is 0 m/s since the nail was only dropped. It has a final velocity of 26 m/s. We substitute these values to the equation and solve for t:

26 = 0 + 9.8*t
t = 26/9.8 = 2.6531 s

The problem asks the velocity of the nail at t = 1 second. We then subtract 1 second from the total time 2.6531 with v_final as unknown.

v_final = 0 + 9.8(2.6531-1) = 16.2004 m/s.

Thus, the nail was traveling at a speed of 16. 2004 m/s, 1 second before it hit the ground. 

5 0
4 years ago
Light travelling in one material enters another material in which it travels faster. The light wave will:
Free_Kalibri [48]
The light will change its direction and bend away from the normal.
8 0
4 years ago
The main purpose of the turbine in a turbojet engine is to
Nuetrik [128]

Answer:

The main purpose of the turbine in the turbojet engine is to Drive the compressor.

Explanation:

5 0
3 years ago
A rock thrown with speed 7.50 m/s and launch angle 30.0 ∘ (above the horizontal) travels a horizontal distance of d = 18.0 m bef
Iteru [2.4K]

Answer:

height from where rock was thrown is 27.916 m

Explanation:

speed = 7.50 m/s

θ = 30°

g= 9.8 m/s²

horizontal distance = 18 m

time require for vertical displacement

time = \frac{distance}{velocity} \\t = \frac{18}{7.5\ cos30^0}

t = 2.8 sec

now for calculation of height

s = ut + 0.5 a t²

-h = v sinθ× t + 0.5 ×(-9.8)× (2.8²)

-h = 7.5 sin30°× 2.8 - 0.5 ×(9.8)× (2.8²)

-h = -27.916 m

h= 27.916 m

height from where rock was thrown is 27.916 m

5 0
3 years ago
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