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2 years ago

15

18)

1 answer:

iris [78.8K]2 years ago

7 0

Answer:

The answer, because i gotta

Explanation:

finish a challenge

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Matter can undergo chemical reactions and nuclear reactions, which

asambeis [7]

Answer:

C

Explanation:

they involve breaking and making chemical bonds

8 0

1 year ago

Why is it a good idea to extend your bare hand forward when you are getting ready to catch a fast-moving baseball?

qaws [65]

Answer:d

Explanation:

It is good to extend your bare hand forward when you are getting ready to catch a fast-moving ball so you can pull your hand back, increasing the time to slow the ball thus decreasing the force.

While catching impulse is being transferred to hands imparting great force, lowering hand would increase the time so that average force decreases and chances to drop the ball also decreases.

4 0

3 years ago

A gazelle leaps from a cliff 2.5 m high with a speed of 5.6m/s.

jeyben [28]

Initial speed of Gazelle is along x direction and its value will be

$v_x = 5.6 m/s$

also its initial height is given as

$y = 2.5 m$

Part a)

now from kinematics along Y direction

$\Delta y = v_y t + \frac{1}{2} at^2$

as we know that

$\Delta y = 0$

$v_y = 0$

$a = 9.8 m/s^2$

$2.5 = 0 + \frac{1}{2} (9.8) t^2$

$t = 0.714 s$

Part b)

distance moved horizontally

$\Delta x = v_x t$

as we know that

$v_x = 5.6 m/s$

now we will have

$v_x = 5.6 (0.714) = 4m$

so it will lend at distance of 4 m.

Part c)

final velocity in vertical direction

$v_{fy} = v_y + at$

$v_{fy} = 0 + (9.8)(0.714) = 7 m/s$

$v_x = 5.6 m/s$

so net speed will be

$v^2 = v_x^2 + v_y^2$

$v^2 = 7^2 + 5.6^2$

$v = 8.96 m/s$

7 0

3 years ago

Which of the following terms represents the debate between genetic and environmental influences on behavior?

katrin [286]

Answer:

I believe it is nature vs nurture

Explanation:

5 0

2 years ago

The condition for the validity of Ohms law is that the a. all of the above b. the temperature should remain constant c. current

True [87]

Answer:

b. the temperature should remain constant

Explanation:

Ohm's law defines that the current via conductor that arise two points would be directly proportional to the voltage via two points

It shows the relation

V = IR

where,

V = Voltage

I = Current

R = resistance

Now the validity condition occurs when the temperature would remain the same

Therefore the option b is correct

3 0

2 years ago