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Korvikt [17]
3 years ago
12

A person uses the same hand to throw both a frisbee or a ball. (Dominate hand)

Physics
1 answer:
strojnjashka [21]3 years ago
6 0

Answer:

False

Explanation:

Using your opposite hand will strengthen neural connections in your brain, and even grow new ones. It’s similar to how physical exercise improves your body’s functioning and grows muscles

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Watt-hours is a measure of energy, just like kilowatt-hours. How can you convert this to Joules?
satela [25.4K]

Work with your units:

1 watt-hour = 1 (joule/second) · (hour) = 1 (joule-hour / second)

(1 joule-hour/sec) · (3600 sec/hour) = 3600 joules

So 1 watt-hour = 3,600 joules

3 0
3 years ago
A ray of light is incident on an air/water interface.
elixir [45]

Answer:

\theta_2=sin^{-1}(\dfrac{n_1\ sin\theta_1}{n_2})

Explanation:

Given that,

The ray makes an angle of 32 degrees with respect to the normal of the surface.

The refractive index of air, n_1=1

The refractive index of water, n_2=1.33

Snell's law is given by :

n_1\ sin\theta_1=n_2\ sin\theta_2

sin\theta_2=\dfrac{n_1\ sin\theta_1}{n_2}

\theta_2=sin^{-1}(\dfrac{n_1\ sin\theta_1}{n_2})

So, option (4) is correct. Hence, this is the required solution.    

3 0
3 years ago
A bicycle wheel is rotating at 49 rpm when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration
raketka [301]
In 9 sec, it increases the angular velocity by (0.45 x 9) rad/s which will give us 4.05 rad/s 
Now get the angular velocity and divide it 2pi = 4.05 by 2(pi) to give how many revolutions 4.05 rad is equivalent to = 0.6446 rps 
Them, multiply this by 60 to get it from rps to rpm increase (0.6446 x 60)=38.676 rpm 
Add this and the starting revolution frequency of 49 rpm to give: (49 rpm + 38.676 rpm) = 87.6760 rpm
6 0
4 years ago
Read 2 more answers
Rocket can propel itself in a vacuum. True or false
makkiz [27]

Answer:

Yes.

Explanation:

Rocket can propel itself in vacuum because the thrust is provided as a reaction to the the gases coming out of rocket, which have nothing to do with vacuum.

3 0
3 years ago
A motorcycle drives up a steeply inclined ramp. The work done on the motorcycle by the Earth’s gravitational force is ____. 1.
Leto [7]

Answer:

be

Explanation:

8 0
3 years ago
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