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2 years ago

Describe and give an example of a normal force

Physics

1 answer:

lozanna [386]2 years ago

6 0

Force is a push or pull

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What do we call living things that share characteristics including processes that make life possible?

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ORGANISMS

Explanation:

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3 years ago

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Two small plastic spheres are given positive electrical charges. When they are a distance of 14.8cm apart, the repulsive force b

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Answer:

Explanation:

Case I: They have same charge.

Charge on each sphere = q

Distance between them, d = 14.8 cm = 0.148 m

Repulsive force, F = 0.235 N

Use Coulomb's law in electrostatics

$F=\frac{Kq_{1}q_{2}}{d^{2}}$

By substituting the values

$0.235=\frac{9\times10^{9}q^{2}}{0.148^{2}}$

$q=7.56\times10^{-7}C$

Thus, the charge on each sphere is $q=7.56\times10^{-7}C$ .

Case II:

Charge on first sphere = 4q

Charge on second sphere = q

distance between them, d = 0.148 m

Force between them, F = 0.235 N

Use Coulomb's law in electrostatics

$F=\frac{Kq_{1}q_{2}}{d^{2}}$

By substituting the values

$0.235=\frac{9\times 10^{9}\times 4q^{2}}{0.148^{2}}$

$q=3.78\times10^{-7}C$

Thus, the charge on second sphere is $q=3.78\times10^{-7}C$ and the charge on first sphere is $4q = 4\times 3.78\times 10^{-7}=1.51 \times 10^{-6} C$ .

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3 years ago

Total charge is uniformly distributed on a spherical surface of radius R. The sphere is centered at the origin and spins around

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Answer:

Explanation:

i have a A in physics

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3 years ago

When comparing the proper position for spotting different exercises, you can conclude that, in spotting any exercise, it is impo

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2 years ago

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Jeremy has a handful of resistors. All of them, except one, have four bands. The exception has three. Why? A. He should use anot

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Answer: option B: The resistor has a tolerance of 20%.

Explanation:

Resistors are color coded to identify their value and function. For a 3- Band resistor, reading from the left, first band denotes first digit, second band depicts second digit and third color depicts the multiplier. The absence of fourth band means the resistor has tolerance 20%.

Hence, the correct answer is option B. The resistor has a tolerance of 20%.

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2 years ago