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3 years ago

What are Base Quantities ?

Physics

2 answers:

Norma-Jean [14]3 years ago

6 0

Answer:

physical quantities that cannot be defined in terms of other quantities.

Examples: Length - meter (m)Time - second (s)Amount of substance - mole (mole)Electric current - ampere (A)Temperature - kelvin (K)Luminous intensity - candela (cd)Mass - kilogram (kg)

tatyana61 [14]3 years ago

3 0

Answer:

Base quantities are physical quantities that cannot be defined in terms of other quantities

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What will occur when the trough of wave A overlaps the trough of wave B?

densk [106]

Constructive interference will occur, which means the waves will combine.

In destructive inference, the waves cancel each other out.

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3 years ago

Read 2 more answers

You hold a ruler that has a charge on its tip 6 cm above a small piece of tissue paper to see if it can be picked up. The ruler

Fed [463]

Answer:

9.81 × 10⁻¹⁰ C

Explanation:

Given:

Distance between the tissue and the tip of the scale, r = 6 cm = 0.06 m

Charge on the ruler, Q = - 12 μC = - 12 × 10⁻⁶ C

Mass of the tissue = 3 g = 0.003 Kg

Now,

The force required to pick the tissue, F = mg

where, g is the acceleration due to gravity

also,

The force between (F) the charges is given as:

$F=\frac{kQq}{r^2}$

where,

q is the charge on the tissue

k is the Coulomb's constant = 9 × 10⁹ Nm²/C²

thus,

$mg=\frac{kQq}{r^2}$

on substituting the respective values, we get

$0.003\times9.81=\frac{9\times10^9\times(-12\times10^{-6})\times q}{0.06^2}$

q = 9.81 × 10⁻¹⁰ C

Minimum charge required to pick the tissue paper is 9.81 × 10⁻¹⁰ C

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3 years ago

Block 2 of mass 1.00 kg is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 20

son4ous [18]

Answer:

x = 0.327 m

Explanation:

Block 2 of mass 1.00 kg is at rest

spring constant = 200 N/m

Block 1 of mass 2 kg moving at 4 m/s

m₁ v₁ = (m₁ + m₂)V

2 x 4 = (2 + 1) V

V = 2.67 m/s

loss of kinetic energy = gain elastic potential energy

$\dfrac{1}{2}mv^2 = \dfrac{1}{2}kx^2$

$\dfrac{1}{2}\times (3)\times 2.67^2 = \dfrac{1}{2}\times 200 \times x^2$

x = 0.327 m

hence, the spring compressed distance is equal to x = 0.327 m

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3 years ago

In a warehouse, the workers sometimes slide boxes along the floor to move them. Two boxes were sliding toward each other and cra

san4es73 [151]

Answer:

Box 1 has more mass than box 2.

Explanation:

Box 1 has more mass than box 2, as it caused a greater affect in the change of speed of box 2. During a collision, the object with a lesser mass will be affected more, causing the velocity to change more. Because box one is greater than box 2, it caused a larger change in speed when they collided.

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3 years ago

If you plot the distance d as an ordinate (y-axis) versus the time of fall t as an abscissa (x-axis), do you expect to get a str

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3 years ago

What are Base Quantities ?​

What are Base Quantities ?