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frutty [35]
3 years ago
14

A person on a bike (m=90kg) is traveling 4m/s at the top of a 2m hill. What is his/her

Physics
2 answers:
Valentin [98]3 years ago
7 0
The answer is 1736 thank youu
alekssr [168]3 years ago
5 0

Answer:

Ug = 1764J

Explanation:

Ug = mgh

Ug = 90*9.8*2

Ug = 1764J

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An astronaut weighing 248 lbs on Earth is on a mission to the Moon and Mars. (a) What would he weigh in newtons when he is on th
lesantik [10]

Answer:

W_m=183.495N

Explanation:

From the question we are told that:

Weight W=248Ibs

Mass of Weight  m= 248*0.453

                          m=112.344kg

Generally the acceleration due to gravity on the Moon is one-sixth that on Earth.

Therefore

The equation for Weight on Moon is given as

 W_m=m*g/6

 W_m=122.344*\frac{9.8}{6}

 W_m=183.495N

3 0
3 years ago
Read 2 more answers
Many meteorites appear to have formed very early in the solar system's history. How do these meteorites support our theory about
tigry1 [53]

Answer:

The appearance and composition of meteorites is what we would expect if metal and rock condensed and increased as our theory suggests.

Explanation:

The planets and most of their satellites were formed by accretion of matter that accumulated around the largest pieces of the proto-nebula. After a chaotic succession of collisions, mergers and reconstruction processes, they acquired a size similar to the current one and moved until they were in the positions we know.

The area closest to the Sun was too warm to retain light materials. That is why the inner planets are small and rocky, while the outer ones are large and gaseous. The evolution of the Solar System has not stopped, but, after the initial chaos, most of the materials are now part of bodies located in more or less stable orbits.

Any theory that attempts to explain the formation of the Solar System should take into account that the Sun rotates slowly and only has 1 percent of the angular momentum, but it has 99.9% of its mass, while the planets have 99% of the angular momentum and only 0.1% of the mass. One of the explanations argues that, at first, the Sun was much colder; The density of its materials was slowing its rotation, while warming, until a certain balance was achieved.

6 0
3 years ago
PLEASE HELP ASAP WILL GIVE BRAINLIEST
77julia77 [94]

Answer:

Not testable.

Explanation:

The temperature of coffee can change, as the coffee gains or loses heat to the surroundings or the room temperature. For example, if you put a hot coffee in a cold room, the coffee will lose heat to the surroundings/room temperature, eventually making it colder.

6 0
3 years ago
Land controlled by the lord of the manor is called
liubo4ka [24]

Answer: demesne lands

Explanation:

" (demesne lands) which were for the personal use of the lord of the manor."

4 0
2 years ago
Read 2 more answers
How long would it take for someone to bike to school if the school is 10 km away and the
damaskus [11]

Answer:

It would take the cyclist 2 hours to cycle to school.

Explanation:

5km/hr for 2 hours would be 10km.

8 0
3 years ago
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