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Zigmanuir [339]
3 years ago
7

An object reflects all the colors of the visible spectrum. What does this tell you about the object?

Physics
2 answers:
vlada-n [284]3 years ago
8 0
The object is white, A. White has no color because it reflects all light, which is also why wearing white makes you cooler than wearing black. Because black absorbs all light.
Irina-Kira [14]3 years ago
3 0
If the object is smooth, it acts as a mirror. Otherwise, it just looks white.
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A woman pushes a 3.2kg textbook on a table as she walks forward 3.5 meters. How much work does the vertical component of the for
Effectus [21]

Answer:

The done by the vertical component of force is zero.

Explanation:

Given data,

The mass of the textbook the women pushes horizontally, m = 3.2 kg

The displacement of the textbook, S = 3.5 m

Let the force of the women acts on the book horizontally,

Therefore, the horizontal component of force is maximum and the vertical component is zero.

If  F is the force applied by the women, then the horizontal and vertical component of the force is,

                                         F_{x}=F Cos\theta

                                         F_{y}=F Sin\theta

Since the force is acting along with the horizontal x component, the vertical component of the force is zero.

Hence, the done by the vertical component of force is zero.

4 0
2 years ago
The most common natural fiber found at a crime scene, and thus forensically insignificant (unless it is of a unique color)
erma4kov [3.2K]
I believe the answer is cotton
4 0
3 years ago
Read 2 more answers
You are in a car and go around a corner very fast. What happens to you?
Fiesta28 [93]

Answer:

You may tip the car over or crash.

Explanation:

Going really fast at high speeds and turn a corner might make the car crash into an object or fall over.

3 0
3 years ago
A 30.0-kg child sits on one end of a long uniform beam having a mass of 20.0 kg, and a 40.0-kg child sits on the other end. The
qaws [65]

let the length of the beam be "L"

from the diagram

AD = length of beam = L

AC = CD = AD/2 = L/2

BC = AC - AB = (L/2) - 1.10

BD = AD - AB = L - 1.10

m = mass of beam = 20 kg

m₁ = mass of child on left end = 30 kg

m₂ = mass of child on right end = 40 kg

using equilibrium of torque about B

(m₁ g) (AB) = (mg) (BC) + (m₂ g) (BD)

30 (1.10) = (20) ((L/2) - 1.10) + (40) (L - 1.10)

L = 1.98 m

4 0
3 years ago
_________ liquids and gases exert a buoyant force.
Eduardwww [97]

Answer:

C. Both

Explanation:

5 0
3 years ago
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