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seropon [69]
2 years ago
7

A boy spins a top on a table. How can he INCREASE the total energy of this system?

Physics
1 answer:
babunello [35]2 years ago
8 0

He can increase the total energy of the system by spinning the top faster.

<h3>What is energy?</h3>

The term energy refers to the ability to do work. The total energy of the system refers to the gravitational potential energy and the rotational energy of the  top.

Hence, he can increase the total energy of the system by spinning the top faster.

Learn more about energy:brainly.com/question/1932868

#SPJ1

You might be interested in
the sun on average is 93 billion miles from earth.how many meters is this? express it using power of ten and using a metric pref
Aleksandr [31]

Answer:

1.4966862 x 10^14 meters

1.55 x 10^11 km

3 0
3 years ago
A source emits sound with a frequency of 16246 Hz. Both it and an observer are moving toward each other, each with a speed of 14
nasty-shy [4]

Answer:

39267.96 Hz

Explanation:

Given:

Frequency emitted = 16246 Hz

Speed of source = 141 m/s

Speed of observer = 141 m/s

Let the velocity of sound is v = 340 m/s

Doppler effect is nothing but the change in the wavelength or frequency of a wave relative to the observer, who is also moving relative to the origin of the wave source.

Therefore, Doppler effect when the source and the observer moves towards each other,

Frequency heard = ( frequency emitted ) ( Velocity of sound + Speed of the observer ) / ( velocity of sound - speed of source )

                      16246 x ( 340 + 141 ) / ( 340 - 141 )

                         = 39267.96 Hz

7 0
3 years ago
Only question 7. I keep getting it wrong and i’m not sure
Akimi4 [234]

Answer:

I think you just have to input the horizontal velocity component.

Explanation:

Assuming no air resistance

The horizontal velocity is constant at

vx = 17.5cos71 = 5.6974... = 5.70 i m/s

The vertical velocity varies with gravity

vy = 17.5sin71 + -9.81(22) = -199.273... = -199 j m/s

v = 5.70i - 199j m/s

arguably one should round to only two significant digits

3 0
3 years ago
A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. The cart starts out at the position x
mash [69]

Answer:

The acceleration of the cart is 1.0 m\s^2 in the negative direction.

Explanation:

Using the equation of motion:

Vf^2 = Vi^2 + 2*a*x

2*a*x = Vf^2 - Vi^2

a = (Vf^2 - Vi^2)/ 2*x

Where Vf is the final velocity of the cart, Vi is the initial velocity of the cart, a the acceleration of the cart and x the displacement of the cart.

Let x = Xf -Xi

Where Xf is the final position of the cart and Xi the initial position of the cart.

x = 12.5 - 0

x = 12.5

The cart comes to a stop before changing direction

Vf = 0 m/s

a = (0^2 - 5^2)/ 2*12.5

a = - 1 m/s^2

The cart is decelerating

Therefore the acceleration of the cart is 1.0 m\s^2 in the negative direction.

5 0
3 years ago
Scientists track _________________ to be able to predict geomagnetic storms and technological disturbances on Earth
Misha Larkins [42]
A. Sunspots and solar storms
6 0
3 years ago
Read 2 more answers
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