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kykrilka [37]
4 years ago
6

When a patient is lying face down like in the image below, what position is she said to be in? Body is lying horizontally, face-

down with the posterior facing upward.
Physics
1 answer:
Stella [2.4K]4 years ago
8 0

(1) Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. (2) A greenhouse stays warm because sunlight and heat coming through the glass roof are mostly trapped. (3) The heat doesn't radiate back into the atmosphere because it's held in by the glass. (4) Something like that happens on Earth. (5) The atmosphere acts like a blanket that keeps the Sun's heat from leaking away into space.

What is the main conclusion you are to draw from this paragraph?

A. The atmosphere is what keeps the planet warm.
B. The greenhouse effect is changing Earth's atmosphere.
C. The sun's heat can easily leak away out into space.
D. Greenhouses help most plants to grow more quickly.

Mark for review (Will be highlighted on the review page)
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Through which media did sound waves travel the fastest and the slowest?
In-s [12.5K]

Answer:

Sound waves travels fastest in solids.

Sound waves travels slowest in gases.

Explanation:

Sound waves travels fastest in solids.

Sound waves travels slowest in gases.

7 0
3 years ago
A baton twirler has a baton of length 0.36 m with masses of 0.48 kg at each end. Assume the rod itself is massless. The rod is f
AleksAgata [21]

Answer:

Part a)

When rotated about the mid point

\tau = 0.021Nm

Part b)

When rotated about its one end

\tau = 0.042 Nm

Explanation:

As we know that the angular acceleration of the rod is rate of change in angular speed

so we will have

\alpha = \frac{\Delta \omega}{\Delta t}

\alpha = \frac{2.4 - 0}{3.6}

\alpha = 0.67 rad/s^2

Part a)

When rotated about the mid point

I = 2mr^2

I = 2(0.48)(0.18)^2

I = 0.0311 kg m^2

now torque is given as

\tau = 0.0311 (0.67)

\tau = 0.021Nm

Part b)

When rotated about its one end

I = m(2r)^2

I = (0.48)(0.36)^2

I = 0.0622 kg m^2

now torque is given as

\tau = (0.0622)(0.67)

\tau = 0.042 Nm

3 0
3 years ago
A sprinter in a 100-m race accelerates uniformly for the first 71 m and then runs with constant velocity. The sprinter’s time fo
adoni [48]

Answer:

The acceleration of the sprinter is 1.4 m/s²

Explanation:

Hi there!

The equation of position of the sprinter is the following:

x = x0 + v0 · t + 1/2 · a · t²

Where:

x = position of the sprinter at a time t.

x0 = initial position.

v0 = initial velocity.

t = time.

a = acceleration.

Since the origin of the frame of reference is located at the starting point and the sprinter starts from rest, then, x0 and v0 are equal to zero:

x = 1/2 · a · t²

At t = 9.9 s, x = 71 m

71 m = 1/2 · a · (9.9 s)²

2 · 71 m / (9.9 s)² = a

a = 1.4 m/s²

The acceleration of the sprinter is 1.4 m/s²

3 0
4 years ago
First to answer and gets it correct gets brainliest
neonofarm [45]

Answer:

b

Explanation:

try looking it up if u need further help google is there to help you

3 0
3 years ago
A ball having a mass of 130 g strikes a wall with a speed of 6.5 m/s perpendicular to the wall and rebounds with only 42% of its
RoseWind [281]

Answer

given,

mass of ball = 130 g = 0.13 kg

speed = 6.5 m/s

t = 9.5 ms = 0.0095 s

rebound with 42 % of initial kinetic energy

a) \dfrac{1}{2}mv_2^2 =0.42\times \dfrac{1}{2}mv_1^2

v_2^2 =0.42\times (6.5)^2

v₂ = 4.212 m/s

b) impulse is equal to change in momentum

  I = m (v_1-v_2)

  I = 0.13\times(6.5 -(-4.21))

      I = 1.393 kg m/s

c) Force = \dfrac{I}{t}

              = \dfrac{1.393}{0.0095}

         F = 146.63 N

4 0
3 years ago
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