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atroni [7]
3 years ago
10

Question 4

Physics
1 answer:
maw [93]3 years ago
6 0

Answer:

Plankton is the correct answer I think

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Calculate the heat required, in calories, to raise
Goshia [24]

Answer:Q=4450.74\ J

Explanation:

Given

mass of tin m=100 gm

Also we know that

specific heat of tin c_{tin}=0.21 J/gm-^{\circ}C

Melting Point of Tin T=231.94^{\circ}C

Heat required to raise the temperature of 100 gm tin is given by

Q=mc\Delta T

where Q=heat\ added

c=specific\ heat\ of\ tin

\Delta T=change\ in\ temperature

Q=100\times 0.21\times (231.94-20)

Q=4450.74\ J

5 0
3 years ago
I have 2 questions
fenix001 [56]
1. your ear drums feel like they pop when you go deep enough under water. kinda feels like bricks. and it hurts if you stay under to long.

2. this could be a reaction from fluid pressure yes. can could be avoided by getting wax ear plugs however even with ear plugs going deep enough under water can still make your ears "pop" due to pressure but at high surfaces it would avoid that.

Please rate me brainliest?

8 0
3 years ago
To make slime stretchy is by putting more glue and aclohal then mix it
Arada [10]
Whatttt why alcohol???
4 0
3 years ago
Describe the effect of speed on voltage
11Alexandr11 [23.1K]

Answer:

Speed has no effect on voltage.

Explanation:

The voltage of the battery in your car is always 12 to 13.5 volts. It makes no difference whether the car is home in the garage or zooming down the interstate.

6 0
2 years ago
During an auto accident, the vehicle’s air bags deploy and slow down the passengers more gently than if they had hit the windshi
Allushta [10]

Answer:

d = 0.38 m

Explanation:

As we know that the person due to the airbag action, comes to a complete stop, in 36 msec or less, and during this time, is decelerated at a constant rate of 60 g, we can find the initial velocity (when airbag starts to work), as follows:

vf = v₀ -a*t  

If vf = 0, we can solve for v₀:

v₀ = a*t = 60*9.8 m/s²*36*10⁻³s = 21.2 m/s

With the values of v₀, a and t, we can find Δx, applying any kinematic equation that relates all of some of these parameters with the displacement.

Just for simplicity, we can use the following equation:

vf^{2} -vo^{2} = 2*a*d

where vf=0, v₀ =21.2 m/s and a= -588 m/s².

Solving for  d:

d = \frac{-vo^{2}}{2*a} = \frac{(21.2m/s)^{2} }{2*588 m/s2} =0.38 m

⇒ d = 0.38 m

5 0
3 years ago
Read 2 more answers
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