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2 years ago

9

The object of badminton is to hit the birdie or "shuttlecock" over the net and onto to court to score how many points to win gam

e?
10

7

21

15

(This is 7th grade gym).

1 answer:

xxTIMURxx [149]2 years ago

6 0

Answer:

either 7 or 21

Explanation:

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3.0E-17 joules divided by 1.0E -27 kgm/s equals?

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Here we have two physical quantities which we have to divide

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other is

$P_2 = 1.0 \times 10^{-27} kg m/s$

now we need to find its division

$\frac{P_1}{P_2} = \frac{3.0\times 10^{-17}}{1.0\times 10^{-27}}$

now we have

$\frac{P_1}{P_2} = 3.0\times 10^{10} Js/kgm$

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A man is at a car dealership, looking for a car to buy. He looks at the sticker on the driver’s window of a car and sees that th

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2 years ago

A mass m = 75 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.2 m and finally

dalvyx [7]

Answer:

The velocity is 19.39 m/s

Solution:

As per the question:

Mass, m = 75 kg

Radius, R = 19.2 m

Now,

When the mass is at the top position in the loop, then the necessary centrifugal force is to keep the mass on the path is provided by the gravitational force acting downwards.

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$\frac{mv^{2}}{R} = mg$

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2 years ago

Go around your house and hit (or tap) ten different objects. The objects should be different shapes and made of different materi

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Answer:

Explanation:

go around your house and tap random objects. For example, a sink. What noise did it make? was it loud or quiet? was it soft or hard? I hope this helps

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2 years ago

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A child is riding a bike at a speed of 6m/s with a total kinetic energy of 1224J. If the mass of the child is 30kg, what is the

UkoKoshka [18]

Answer:

Mass of bike = 38 kg.

Explanation:

Kinetic energy is given by the expression, $KE = \frac{1}{2} mv^2$ , where m is the mass and v is the velocity.

Here speed of child riding bike = 6 m/s

Mass of child = 30 kg

Total kinetic energy = 1224 J

Let the mass of bike be, m kg

So, total mass of child and bike = (m + 30) kg

Substituting,

$1224 = \frac{1}{2}* (m+30)*6^2\\ \\ m+30=68\\ \\ m=38kg$

So, mass of bike = 38 kg.

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3 years ago