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3 years ago

15

How do the temperature curves in your graph show the range of temperature?

1 answer:

Alexeev081 [22]3 years ago

7 0

Answer:

Step-by-step Explanation:

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When are Waves produced

serg [7]

Answer:

Waves are caused by wind, or are created by the friction between wind and surface water

Explanation:

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3 years ago

A medieval instrument used to determine the position of the sun:

Stels [109]

Answer: astrolabe

Explanation:

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2 years ago

Dan is gliding on his skateboard at 4.00m/s . He suddenly jumps backward off the skateboard, kicking the skateboard forward at 6

frozen [14]

To solve this problem we will apply the concepts related to the conservation of the Momentum. For this purpose we will define the momentum as the product between mass and velocity, and by conservation the initial momentum will be equal to the final momentum. Mathematically this is,

$m_1u_1+m_2u_2 = m_1v_1+m_2v_2$

Here,

$m_{1,2}$ = Mass of Dan and Skateboard respectively

$u_{1,2}$ = Initial velocity of Dan and Skateboard respectively

$v_{1,2}$ = Final velocity of Dan and Skateboard respectively

Our values are:

Dan's mass

$m_1 = 60kg$

Mass of the skateboard

$m_2 = 7.0kg$

Both have the same initial velocity, then

$u_1= u_2 = 4m/s$

Final velocity of Skateboard is

$v_2 = 6m/s$

Rearranging to find the final velocity of Dan we have then,

$m_1u_1+m_2u_2 = m_1v_1+m_2v_2$

$m_1v_1+m_2v_2 = (m_1+m_2)u_1$

$v_1 = \frac{ (m_1+m_2)u_1 -m_2v_2}{m_1}$

Replacing,

$v_1 = \frac{(60+7)(4)-(7)(6)}{60}$

$v_1 = 3.76m/s$

Therefore Dan will touch the ground at a speed of 3.76m/s

5 0

4 years ago

A merry go round has rotational inertia (moment of inertia) of 73.0 kg/m^2 and is rotating at a constant speed of 30.0 rads./sec

valentinak56 [21]

The angular speed is 64 mph

4 0

2 years ago

Your outlets at home are rated at 120 V, i.e. the two prongs have on average a potential difference of 120V. If you transfer 2.7

hodyreva [135]

Answer:

E =230.4 MJ

Explanation:

As 1 mole of electron = 6X 10^23 particles.

charge of an electron is 1.6 X 10 ^-19 C

Finding Charge:

(6X10^23 ) (2.7)(1.6X10^-19 C)

i.e. 192 K C

now to find the energy released from electrons

V=E/q

E=V X q

i.e E = 120 V X 192 K C

E =230.4 MJ

4 0

3 years ago