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9966 [12]
3 years ago
10

on june 21 some earth locations have 24 hours of daylight these locations are all between the latitudes of

Physics
1 answer:
andrew-mc [135]3 years ago
4 0

66° N and 90° N

the area of the artic circle in the northern hemisphere

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A man at point A directs his rowboat due north toward point B, straight across a river of width 100 m. The river current is due
prohojiy [21]

Answer:

1.35208 m/s

Explanation:

Speed of the boat = 0.75 m/s

Distance between the shores = 100 m

Time = Distance / Speed

Time=\frac{100}{0.75}=133.33\ s

Time taken by the boat to get across is 133.33 seconds

Point C is 150 m from B

Speed = Distance / Time

Speed=\frac{150}{\frac{100}{0.75}}=1.125\ m/s

Velocity of the water is 1.125 m/s

From Pythagoras theorem

c=\sqrt{0.75^2+1.125^2}\\\Rightarrow c=1.35208\ m/s

So, the man's velocity relative to the shore is 1.35208 m/s

3 0
3 years ago
Pleasse help
GaryK [48]

Hi,

The correct answer is letter B.

The last group contains noble gases, while both along the top and along the bottom the elements on the right are non-metals.

3 0
3 years ago
Read 2 more answers
Under which set of circumstances will the pressure of a gas DEFINITELY increase?
malfutka [58]
Temperature increase, smaller container, or influx of more gas
5 0
3 years ago
A coin is made of ______​
lys-0071 [83]

Answer:

coins made with the combination of copper zinc and Nickel

A cloth is made of fabrics

A towel is made from cotton

an umbrella is made up of fiberglass

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5 0
2 years ago
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an elect
alexgriva [62]

Answer:

Explanation:

Kinetic energy gained by alpha particle

= charge x potential difference

1/2 mv² = 3.2 x 10⁻¹⁹ x 3.45 x 10⁻³

.5 x 6.68 x 10⁻²⁷ V² = 11.04 x 10⁻²²

V² = 3.3  x 10⁵

V = 5.74 x 100

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Mechanical energy is conserved in respect of A , C and D .

Part B

B , C, are unknown .

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3 years ago
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