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Hatshy [7]
3 years ago
8

What is the difference about the modern times and ice ages

Physics
1 answer:
Rasek [7]3 years ago
6 0

Answer:

The average temperature is much warmer

Explanation:

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At room temperature, an oxygen molecule, with mass of 5.31x10^-26kg , typically has a kinetic energy of about 6.21x10^-21J. How
den301095 [7]

Answer:

V=483.63 m/s

Explanation:

Given that

mass ,m= 5.31 x 10⁻²⁶ kg

Kinetic energy KE= 6.21 x 10⁻²¹ J

As we know that the kinetic energy of the mass m with moving velocity V given as

KE=\dfrac{1}{2}mV^2  

Now by putting the values

6.21\times 10^{-21}=\dfrac{1}{2}\times 5.31\times 10^{-26}\times V^2

V^2=\dfrac{2\times 6.21\times 10^{-21}}{5.31\times 10^{-26}}

V^2=233898.30

V=\sqrt{233898.30}\ m/s

V=483.63 m/s

Therefore the velocity of the molecule at the room temperature will be 483.63 m/s.

6 0
4 years ago
A plane flies along a straight line path after taking off, and it ends up 210 km farther east and 90.0 km farther north, relativ
Lapatulllka [165]
<span>A plane flies along a straight line path after taking off, and it ends up 210 km farther east and 90.0 km farther north, relative to where it started. we should use Pythagoras theorem for this. distance^2= 210^2 + 90^2.=228.47km, when rounding off this would comes around 230 km</span>
8 0
3 years ago
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From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.10 m/s and angle
GarryVolchara [31]

Answer:

Part a)

y = 88.5 m

Part b)

v_x = 7.7 m/s

v_y = 2.5 m/s

Part c)

equation of position in x direction is given as

x = v_x t

equation of position in y direction is given as

y = v_y t + \frac{1}{2}gt^2

Part d)

x = 30.8 m

Part e)

H = 88.5 m

Part f)

t = 1.2 s

Explanation:

As we know that ball is projected with speed

v = 8.10 m/s at an angle 18 degree below the horizontal

so we will have

v_x = 8.10 cos18

v_x = 7.7 m/s

v_y = 8.10 sin18

v_y = 2.5 m/s

Part a)

Since it took t =4 s to reach the ground

so its initial y coordinate is given as

y = v_y t + \frac{1}{2}a_y t^2

y = 2.5(4) + \frac{1}{2}(9.81)(4^2)

y = 88.5 m

Part b)

components of the velocity is given as

v_x = 8.10 cos18

v_x = 7.7 m/s

v_y = 8.10 sin18

v_y = 2.5 m/s

Part c)

equation of position in x direction is given as

x = v_x t

equation of position in y direction is given as

y = v_y t + \frac{1}{2}gt^2

Part d)

distance where it will strike the floor is given as

x = v_x t

x = 7.7 \times 4

x = 30.8 m

Part e)

Height from which it is thrown is same as initial y coordinate of the ball

so it is given as

H = 88.5 m

Part f)

time taken by ball to reach 10 m below is given as

y = v_y t + \frac{1}{2}gt^2

10 = 2.5t + \frac{1}{2}(9.81) t^2

t = 1.2 s

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3 years ago
Why cant people with aids foght out the infection?
sveta [45]
They can fight the infection but not the disease
3 0
3 years ago
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Which of the following types of electromagnetic radiation has the longest wavelength?
11111nata11111 [884]
The longest wavelength is the radio waves.
Please make brainliest! ☺
8 0
3 years ago
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