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Vilka [71]
3 years ago
12

Scientists have the LEAST difficulty predicting _____. (4 points) Select one: a. tornadoes b. hail c. hurricanes d. thunderstorm

s
Physics
1 answer:
KatRina [158]3 years ago
6 0

Hey there   The answer is most likely to be D.thunderstorms Hope this helps

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Calculate how much work you need to move the 130N trunk to a ledge 2 n above
arsen [322]
260 joules is hopefully right.
3 0
3 years ago
Read 2 more answers
A batter hits a foul ball. The 0.14-kg baseball that was approaching him at 40 m/s leaves the bat at 30 m/s in a direction perpe
swat32

Answer:

<em>7 kgm/s or 7 Ns</em>

Explanation:

Since the velocity are perpendicular to each other, the impulses will also be perpendicular.

From newton's second law of motion,

Impulse = mass×velocity

I = mv............. Equation 1

For the horizontal,

I₁ = mv₁......... Equation 2

Given: m = 0.14 kg, v₁ = 40 m/s

Substitute into equation 2

I₁ = 40(0.14)

I₁ = 5.6 kgm/s

Also for the vertical,

I₂ = mv₂.............. Equation 3

Given: m= 0.14 kg, v₂ = 30 m/s

Substitute into equation 3

I₂ = 0.14(30)

I₂ = 4.2 kgm/s

Using Pythagoras to get the resultant impulse

I = √(I₁²+I₂²)................ Equation 4

Substitute the value of I₁ and I₂ into equation 4

I = √(5.6²+4.2²)

I = √(31.36+17.64)

I = √49

<em>I = 7 kgm/s or 7 Ns</em>

5 0
4 years ago
Read 2 more answers
What are the characteristics of the image formed by the object?
rodikova [14]

Answer:

The image is formed by a convex lens with the object at 2F.

  • Image will be of same size as the object
  • Image will be real and upside down.

6 0
2 years ago
PLEASE HELP!!!<br><br> Both Transverse and Longitudinal Waves transmit _______ and not ______.
qwelly [4]
I believe this is it

6 0
4 years ago
I NEED HELP BADLY
Marrrta [24]

Answer:

a) Andrea's initial momentum, 200 kg m/s

b) Andrea's final momentum, 0

c) Impulse,  = - 200 Ns

d) The force that the seat belt exerts on Andrea, - 400 N

Explanation:

Given data,

The initial velocity of the car is, u = 40 m/s

The mass of Andrea, m = 50 kg

The time period of deceleration, a = 0.5 s

The final velocity of the car, v = 0

a) Andrea's initial momentum,

               p = mu

                  = 50 x 40

                  = 200 kg m/s

b) Andrea's final momentum

                  P = mv

                     = 50 x 0

                    = 0 kg m/s

c) Impulse

                   I = mv - mu

                     = 0 - 200

                    = - 200 Ns

The negative sign indicated that the momentum is decreased.

d) The force that the seat belt exerts on Andrea

                   F = (mv - mu)t

                     = (0 - 200) / 0.5

                     = - 400 Ns

Hence,the force that the seat belt exerts on Andrea is, - 400 N

7 0
3 years ago
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