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Tju [1.3M]
4 years ago
12

What would be the first thing you would do if your clothes caught fire while working in a laboratory? select one of the options

below as your answer:
a. call out to your teacher
b. drop and roll on the floor to extinguish the fire
c. run towards a source of water to extinguish the fire
Physics
1 answer:
Ksivusya [100]4 years ago
3 0
<span>c. run towards a source of water to extinguish the fire </span>
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A 24kg child descends a slide 5m high and reaches the bottom with a speed of 2.8m/s. How much thermal energy due to friction was
Rama09 [41]

Answer:

1101.96 J

Explanation:

Potential energy at top = mgh = 24*10*5 = 1200J

Kinetic energy at bottom = 1/2*m*v² = 0.5*24*(2.8)²= 94.08 J

Loss of energy = 1200 J - 98.04 J

                         = 1101.96 J

Thermal energy due to friction =1101.96 J

8 0
4 years ago
A balloon contains helium with a mass of 0.00296 g. What is the volume of helium in the balloon? (Note: Helium’s density is 0.00
Over [174]

Answer:

178 cm3

Explanation:

From definition of density, it is mass per unit volume of an object, expressed as density=mass/volume and making volume the subject of the above formula we have volume= mass/density and substituting 0.00296 g for mass and 0.00001663 g/cm3 for density then we have

Volume=0.00296/0.00001663

Volume is approximately 178 cm3

7 0
3 years ago
Can someone help me?
Alex777 [14]

Answer:

P is pressure ,rho(slanted p) is density,g is the acceleration due to gravity, v is velocity and h is height

Explanation:

6 0
3 years ago
Crickets Chirpy and Milada jump from the top of a vertical cliff. Chirpy drops downward and reaches the ground in 2.70 s, while
Vinvika [58]

Answer:

Explanation:

Given

Time taken to reach ground is t=2.7\ s

Malda initial velocity u=95\ cm/s

Let h be the height of Cliff

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

where, u=initial velocity

t=time

In first case chirpy drop downward thus u=0

h=0+\frac{1}{2}(9.8)(2.7)^2

h=35.72\ m

For Milada there is horizontal velocity u=95 cm/s=0.95 m/s[/tex]

time taken to reach the ground will be same so distance traveled in this time with 0.95 m/s horizontal velocity is given by

R=u\times t

R=0.95\times 2.7=2.43\ m    

7 0
3 years ago
On what evidence do you accept the statement,"Aboslute zero is at -273."​
MissTica

Answer:

ffgfgffgffg

Explanation:tytttyyttyy

7 0
3 years ago
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