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Ilya [14]
3 years ago
13

Which best describes proper disposal technique? A bin should be labeled “chemical wastes and hazardous waste.” A bin should be l

abeled “chemical wastes and broken glass.” Students should know proper disposal of the chemicals they use. Students can dispose of all chemicals in the sink.
Physics
2 answers:
Sergeeva-Olga [200]3 years ago
5 0
Chemical wastes and broken glasses
DanielleElmas [232]3 years ago
3 0

Answer: ''A bin should be labeled “chemical wastes and broken glass.”

Explanation:

The waste disposal is issue is the primary concern for the laboratory staff or others who daily work in labs. It should be done with utmost precaution and care.

Among the options given, ''A bin should be labeled “chemical wastes and broken glass.” is the correct option. This is because of the fact that chemical wastes can be hazardous. They can catch fire with air or may cause burns and injury if they accidentally come in contact with the skin. The broken glass may exhibit sharp edges which can be injurious. Therefore, the bin which contains either chemical wastes or broken glass must be labelled properly so as prevent hazards and injuries in the laboratory.

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A girl throws a rock horizontally at 10 m/s from the top of a building, 22 m above street level. Assuming free fall conditions a
MAXImum [283]

Answer:21.18 m

Explanation:

Given

initial speed u=10 m/s

height of building h=22 m

time taken to complete 22 m

h=ut+\frac{1}{2}at^2

initial vertical velocity =0

22=\frac{1}{2}gt^2

t=\sqrt{\frac{22\times 2}{g}}

t=2.11 s

Horizontal Distance moved

R=u_x\times t

R=10\times 2.11

R=21.18 m

6 0
3 years ago
Two identical positive charges exert a repulsive force of 6.1 × 10−9 n when separated by a distance 3.6 × 10−10 m. calculate the
Natalka [10]
Im a jewish salesman wanting to know if you wanted to buy some jesus movies

3 0
3 years ago
A certain quantity of steam has a temperature of 100.0 oC. To convert this steam into ice at 0.0 oC, energy in the form of heat
KonstantinChe [14]

Answer:

2452.79432 m/s

Explanation:

m = Mass of ice

L_s = Latent heat of steam

s_w = Specific heat of water

L_i = Latent heat of ice

v = Velocity of ice

\Delta T = Change in temperature

Amount of heat required for steam

Q_1=mL_s\\\Rightarrow Q_1=m(2.256\times 10^6)

Heat released from water at 100 °C

Q_2=ms_w\Delta T\\\Rightarrow Q_2=m4186\times (100-0)\\\Rightarrow Q_2=m0.4186\times 10^6

Heat released from water at 0 °C

Q_3=mL_i\\\Rightarrow Q_3=m(333.5\times 10^3)\\\Rightarrow Q_3=m(0.3335\times 10^6)

Total heat released is

Q=Q_1+Q_2+Q_3\\\Rightarrow Q=m(2.256\times 10^6)+m0.4186\times 10^6+m(0.3335\times 10^6)\\\Rightarrow Q=3008100m

The kinetic energy of the bullet will balance the heat

K=Q\\\Rightarrow \frac{1}{2}mv^2=3008100m\\\Rightarrow v=\sqrt{2\times 3008100}\\\Rightarrow v=2452.79432\ m/s

The velocity of the ice would be 2452.79432 m/s

6 0
4 years ago
A jogger moves from a position x =
vlada-n [284]

Answer:

3 m/s

Explanation:

We'll begin by calculating the change in displacement of the jogger. This can be obtained as follow:

Initial displacement (d₁) = 4 m

Final displacement (d₂) = 16 m

Change in displacement (Δd) =?

Δd = d₂ – d₁

Δd = 16 – 4

Δd = 12 m

Finally, we shall determine the determine the average velocity. This can be obtained as follow:

Change in displacement (Δd) = 12 m

Time (t) = 4 s

Velocity (v) =?

v = Δd / t

v = 12 / 4

v = 3 m/s

Thus, the average velocity of the jogger is 3 m/s

5 0
3 years ago
Anything that has volume or mass
irinina [24]
Any object, except antimatter, :)

8 0
3 years ago
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