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DENIUS [597]
3 years ago
15

The rates of obesity have more than doubled for children between the ages of 6 and 11 since the middle of the twentieth century.

t or f
Physics
1 answer:
Illusion [34]3 years ago
8 0

Answer:

True

Explanation:

Obesity is a growing concern in children as rates skyrocket to an all time high

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What causes rain?
Kisachek [45]

Answer:

the awnser is A

Explanation:

Brainliest Please

5 0
3 years ago
Read 2 more answers
A .5 kg toy train car moving forward at 3 m/s collides with and sticks to a .8 kg toy car that is traveling at 2 m/s what is the
Viktor [21]
Here we have perfectly inelastic collision. Perfectly inelastic collision is type of collision during which two objects collide, stay connected and momentum is conserved. Formula used for conservation of momentum is:
m_{1} * v_{1} + m_{2} * v_{2} = m_{1} * v'_{1}+ m_{2} * v'_{2}

In case of perfectly inelastic collision v'1 and v'2 are same.

We are given information:
m₁=0.5kg
m₂=0.8kg
v₁=3m/s
v₂=2m/s
v'₁=v'₂=x

0.5*3 + 0.8*2 = 0.5*x + 0.8*x
1.5 + 1.6 = 1.3x
3.1 = 1.3x
x = 2.4 m/s
4 0
3 years ago
Electric power is to be generated by installing a hydraulic turbine-generator at a site 120 m below the free surface of a large
iogann1982 [59]

Answer:

P = 2234400 Watt

Explanation:

Power generation is given as rate of work done

Here the turbine generator is located at 120 m below the free surface

So here rate of work done is given as rate of potential energy

Power = \frac{dw}{dt}

Power = \frac{mgh}{t}

so we have

Power = (\frac{dm}{dt})gh

now we have

Power = 1900(9.8)(120) = 2234400 Watt

so the power generation potential will be 2234400 Watt

8 0
3 years ago
Help a nga out with his physic hw
aleksandr82 [10.1K]
Rarefactions are where you see the wave further apart. Where it's closer together, it's called a compression.
7 0
3 years ago
A 3600-N Force causes a car to accelerate at a rate of 4m/s2. What is the mass of the car?
Mademuasel [1]

Answer:

14400 kg

Explanation:

According to Newton's second law of motion, F = ma

F = 3600 N

a = 4m/s2

3600 = m/4

3600*4 = m

m = 14400 kg

Therefore the mass of the car is 14400 kg

Hope u understand

Please mark as brainliest

3 0
3 years ago
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