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irga5000 [103]
3 years ago
7

If Tony and Tanya both run at the same speed and in the same direction and they both run for the same amount of time, what can y

ou say about the distance they travel?
Physics
1 answer:
Marina86 [1]3 years ago
8 0

Answer: They travel equal distances

Explanation:

Distance is amount of space covered from one point to another. It is measured in metres. Distance = speed x time taken

In this case,

- Since Tony and Tanya both run at the same speed: let speed = b

- Also, both run for the same amount of time: let time = c

Therefore, distance covered by Tony and Tanya = speed x time taken

Distance = b x c

Distance = bc (i.e Tony travelled a distance of bc, so also Tanya)

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A planet's moon travels in an approximately circular orbit of radius 7.0 ✕ 10⁷ m with a period of 6 h 38 min. Calculate the mass
natka813 [3]

Answer:

3.56×10²⁶ Kg.

Explanation:

Note: The gravitational force is acting as the centripetal force.

Fg = Fc........................... Equation 1

Where Fg = gravitational Force, Fc = centripetal force.

Recall,

Fg = GMm/r²......................... Equation 2

Fc = mv²/r............................. Equation 3

Where M = mass of the planet, m = mass of the moon, r = radius of the orbit and G = Universal gravitational constant.

Substituting equation 2 and 3 into equation 1

GMm/r² = mv²/r

Simplifying the equation above,

M = v²r/G .............................. Equation 4.

The period of the moon in the orbit

T = 2πr/v

Making v the subject of the equation,

v = 2πr/T............................. Equation 5

where r = 7.0×10⁷ m, T = 6 h 38 min = (6×3600 + 38×60) s = (21600+2280) s

T = 23880 s, π = 3.14

v = (2×3.14×7.0×10⁷ )/23880

v = 18409 m/s

Also Given: G = 6.67×10⁻¹¹ Nm²/kg²

Also substituting into equation 4

M = 18409²×7.0×10⁷ /(6.67×10⁻¹¹)

M = 3.56×10²⁶ Kg.

Thus the mass of the planet =  3.56×10²⁶ Kg.

5 0
4 years ago
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
kiruha [24]
I believe the answer is up and down :)
7 0
3 years ago
What term refers to a universal fact sometimes based on mathematical equations?
noname [10]

Answer:

Scientific law

Explanation:

3 0
2 years ago
A football is thrown at an initial velocity of 51 mph at an angle of 37 degrees. How many yards is the football thrown
Allisa [31]

Answer:250.03m

Explanation:

Initial velocity =u=51mph

Angle=β=37

Acceleration due to gravity=g=10

The distance covered by the football is the range

Range=(u^2xsin2β)/g

Range=(51^2xsin(2x37))/10

Range=(51x51xsin74)/10

Range=(2601xsin74)/10

Range=(2601x0.9613)/10

Range=(2500.3)/10

Range=250.03m

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4 years ago
Which has a lower frequency x rays or gamma rays
lukranit [14]

Answer:

X-rays have shorter wavelengths (higher energy ) than UV waves and, generally, longer wavelengths (lower energy) than gamma rays.

Explanation:

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