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aleksklad [387]

3 years ago

11

Give one example of a scientific discovery that has both advantages and disadvantages and discuss the tradeoffs involved in use

of the discovery.

1 answer:

dimulka [17.4K]3 years ago

4 0

Atomic bomb:
Pro: It helps keep countries at peace due to fear of destruction
Con: Very deadly and can destroy many people's lives.

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A balanced relationship between the energy that you intake and your bodys energy output is the definition of _____.

Jet001 [13]

Whole body METABOLISM

5 0

3 years ago

A soccer player takes a corner kick, lofting a stationary ball 33.0° above the horizon at 15.0 m/s. If the soccer ball has a mas

Alexxandr [17]

Explanation:

It is given that,

Mass of the soccer ball, m = 0.425 kg

Speed of the ball, u = 15 m/s

Angle with horizontal, $\theta=33^{\circ}$

Time for which the player's foot is in contact with it, $\Delta t = 5.1\times 10^{-2}\ s$

Part A,

The x component of the soccer ball's change in momentum is given by :

$\Delta p_x=mv\ cos\theta$

$\Delta p_x=0.425\times 15\ cos(33)$

$p_x=5.34\ kg-m/s$

The y component of the soccer ball's change in momentum is given by :

$\Delta p_y=mv\ sin\theta$

$\Delta p_y=0.425\times 15\ sin(33)$

$p_y=3.47\ kg-m/s$

Hence, this is the required solution.

3 0

3 years ago

Match the scienntist with their accomplishment / discoveries

Art [367]

Answer:

newton - motion, gravity

kepler - orbital paths

brahe - the sun goes around the earth

Explanation:

im not sure about brahe but its the only one that makes sense

8 0

3 years ago

A system consists of a disk rotating on a frictionless axle and a piece of clay moving toward it, as shown in the figure above.

cestrela7 [59]

Explanation:

Forgive me If I am wrong, it's been a while since I've studied Torque.

The formula for the angular momentum is

momentum= I*w.

We can also write I*W as 1/2MR^2 * W so the extra mass coming from the block of clay would most likely cause the angular momentum to increase from the amount it was before.

6 0

2 years ago

The perception of high or low sounds is called ____________. 2. The _______________ is a measurement unit for intensity of sound

matrenka [14]

1. pitch

2. decibel

3. sorry, i dont know

4. c

5. acoustics

6 0

3 years ago