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3 years ago

Why is it important not to present a biased argument as a public speaker?

Physics

1 answer:

UNO [17]3 years ago

4 0

Answer:

Explanation:

a) because it's immoral as you're trying to convince people of your views when you should be giving both sides of the story so people are able to come up with their own opinions on what you're talking about

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A completely inelastic collision occurs between two balls of wet putty that move directly toward each other along a vertical axi

nexus9112 [7]

Answer:

$y=2.64m$

Explanation:

Given data

Ball one

mass m₁=3.0kg

velocity v₁=20 m/s

Ball second

mass m₂=2.0 kg

velocity v₂=12 m/s

First we need the speed of combined ball.Since the system conserves the linear momentum

$p_{i}=p_{f}\\m_{1}v_{1}+m_{2}v_{2}=m_{t}v_{t}$

So the combined velocity vt is:

$v_{t}=\frac{m_{1}v_{1}+m_{2}v_{2}}{m_{t}}\\$

Since the two balls 1 and 2 are moving in opposite direction

$v_{t}=\frac{m_{1}v_{1}-m_{2}v_{2}}{m_{t}}\\$

Substitute the given values

$v_{t}=\frac{(3kg)(20m/s)-(2kg)(12m/s)}{(3+2)kg}\\ v_{t}=7.2 m/s$

We have the equation for motion with constant acceleration is given by:

$v^2=v_{o}^2+2g(y-y_{o})\\$

At initial position y₀=0 and vt=v-v₀

$v^{2}=v_{o}^2+2g(y-0)\\ y=\frac{v^2-v_{o}^2}{2g}\\ y=\frac{v_{t}^2}{2g}\\ y=\frac{(7.2m/s)^2}{2(9.8m/s^2)}\\ y=2.64m$

8 0

3 years ago

Will give correct answer brainliest

Sav [38]

Answer:

.....

Explanation:

i. sorry? i really hope this helps!

4 0

2 years ago

Q5: An ice skater moving at 12 m/s coasts

ExtremeBDS [4]

u = 0.077

Explanation:

Work done by friction is

Wf = ∆KE + ∆PE

-umgx = ∆KE,. ∆PE =0 (level ice surface)

-umgx = KEf - KEi = -(1/2)mv^2

Solving for u,

u = v^2/2gx

= (12 m/s)^2/2(9.8 m/s^2)(95 m)

= 0.077

8 0

3 years ago

When Dr. Hewitt immerses an object in water the second time and catches the water that is displaced by the object, how does the

Dimas [21]

Answer:

Explanation:

- The volume of water displaced by immersing the object is equal the amount of water spilled and caught by Dr. Hewitt.

- The amount of water is proportional to the volume of object of fraction of object immersed in water will lead to the same fraction of water displaced and caught by Dr. Hewitt.

- When the object is immersed the force of Buoyancy acts against the weight and reducing the scale weight.

- The amount of Buoyancy Force is proportional to the fraction of Volume of object immersed in water; hence, the same amount is spilled/lost.

5 0

3 years ago

For an object on a flat surface, the force of gravity is 10 newtons downward and the normal force is 10 newtons upward. The appl

bezimeni [28]

3 Newtons toward the right because Newton’s second law:
F = ma
15N - 12N = ma
3N = ma
(With the right being the positive direction and the left the negative direction)

3 0

2 years ago