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Fed [463]
3 years ago
7

Which vector goes from (-1,-2) to (3, 4)? A. d B. c C. b D. a

Physics
1 answer:
kogti [31]3 years ago
5 0

vector b is the answer...............

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When people aboard a plane...the amount of baggage you take has to vary because the plane has a certain carrying capacity.
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3 years ago
Explain how a clinical thermometer should be sterilized and why​
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Answer:

Explain why it is not advisable to sterilise a clinical thermometer on boiling water at normal atmospheric temperature. A clinical thermometer has small temperature range. The glass will crack/burst due to excessive pressure created by expansion of mercury.

4 0
2 years ago
You accidentally slide a glass of milk off a table that is 0.9 m tall. How long does it take the milk to hit the ground.
labwork [276]

Fine, lets do a retry of this.

Δd = -0.9m

v₁ = 0

v₂ = ?

a = -9.8 m/s²

Δt = ?

We can use the following kinematic equation and solve for Δt.

                             Δd = v₁Δt + 0.5(a)(Δt)²

                             Δd = 0.5(a)(Δt)²

                           2Δd = a(Δt)²

                     √2Δd/a = Δt

√2(-0.9m)/(-9.8 m/s²) = Δt

0.<u>4</u>28571428574048 = Δt

Therefore, it takes 0.4 seconds for the glass to hit the ground, or 0.43s as you said (even though I don't believe it follows significant digit rules)

7 0
3 years ago
What is the uses of echoes​
Anestetic [448]

Answer:

Echoes are the reflection of sound from relatively flat object that is far enough away that you can discern the time difference. Echoes are used to measure distance, velocity, and the shape of objects. Echoes off gratings result in an unusual pinging sound

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3 years ago
Name and describe the apparatus used by Cavendish to discover the universal gravitation constant
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Its like a suspended wood with a lead sphere attached to each of its ends
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