Answers
Answer:
Explanation:
A comet is a celestial body made up of ice and dust and assumed to have a tail.
As per considering ancient history, they are even termed as death-dealers and have doomed many planets.
If we talk about Earth, comets and asteroids have played a massive role in changing Earth's geology, atmosphere and evolution. Its believed that dinosaurs population is wiped out from Earth because of comets that falls during that time. Many new diseases are even brought by them.
Large comets can result into global environmental damage and can even lead to mass extension.The dust from the impact and the heat creates many harmful oxides resulting into acid rain and can kill thousand of organism.
Related Questions
A high diver of mass 60.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.10 s after her feet first touch the water, what average upward force did the water exert on her
A rigid tank initially contains 3kg of carbon dioxide (CO2) at a pressure of 3bar.The tank is connected by a valve to a frictionless piston-cylinder assembly located vertically above, initially containing 0.5 m^3 of CO2. The piston area is 0.1 m^2. Initially the pressure of the CO2 in the piston-cylinder assembly is 2 bar. The ambient pressure and temperature are 1 bar and 290 K. Although the valveis closed, a small leak allows CO2 to flow slowly into the cylinder from the tank. Owing to heat transfer, the temperature of the CO2 throughout the tank and the piston-cylinder assembly stays constant at 290K. You can assume ideal gas behavior for CO2.Determine the following:a. The total amount of energy transfer by work (kJ)b. The total amount of energy transfer by heat (kJ)
A train moving west with an initial velocity of 20 m/s accelerates at 4 m/s2 for 10 seconds. During this time, the train moves a distance of meters.
) A circular coil of diameter 20. cm, with 16. turns is in a 0.13 Tesla field. (a) Find the total flux through the coil when the field is perpendicular to the coil plane. (b) If the coil is rotated in 10. ms so its plane is parallel to the field, find the average induced emf.
Answers
Answer:
Explanation:
Given that,
Vector A points in the -x direction with a magnitude of 21.
Let the x component is making an angle of 60 degrees with negative x axis. The x component of a vector is given by :
A = -42 units
The y component of a vector is given by :
So, the y component of vector A is (-36.37) degrees. Hence, this is the required solution.
time dilation slows the apparent acceleration, reducing the force
mass, and thus the force, depends on the reference frame chosen
Newton didn't know about Einstein
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Answer:
Mass and thus force depends on the reference frame chosen
Explanation:
This can be explained as Newton's law of gravity provides action which are instantaneous at a distance and involves the evaluation of all the quantities at present time or at the instant they occur.
If the body undergoes a change in its mass distribution there will be an immediate change in its gravitational force without any lag.
Now, if we talk about special relativity, it would be absurd to say that an information can travel faster than light. The effect is in synchronization with the cause in one reference frame where the effect occurs after the cause for some observer in some other reference frame.
In order to observe Newton's law of gravity all the observer's in different reference frames must observe the same phenomena which could only be possible if time were absolute and in special relativity, time is not absolute.
Therefore, Newton's law of gravity was inconsistent with the Einstein's Special Relativity.
Answers
Given:
u(initial velocity): 154 m/s
accelerates (a): 1.8 m/s^2
t= 1 min=60 secs
Now we know that
s= ut + 1/2(at^2)
s= 154 x 60 + (1.8 × 60 ×60) ÷ 2
s= 12,480 m
Answers
Answer:
90 m
Explanation:
There are two unknowns: the amount of time the squirrel spent running, and the length of the race. Let's call these t and x, respectively.
The average velocity is the total distance divided by the total time.
5.0 m/s = x / (t + 3.0)
The total distance is the time she spent running times the speed she ran at.
x = (6.0 m/s) t
Substitute and solve:
5 = 6t / (t + 3)
5 (t + 3) = 6t
5t + 15 = 6t
t = 15
She ran for 15 seconds (not including the 3 seconds she stopped). So the length of the race is:
x = (6.0 m/s) (15 s)
x = 90 m
O
A. Fewer health problems
O
O
B. All of these
C. Making more money
O
D. A lower divorce rate
Answers
The benefits of learned optimism that have been found in research are Fewer health problems, Making more money, and a lower divorce rate. The correct option is B.
Learned optimismhas been associated with numerous benefits in research, including fewer health problems, making more money, and a lower divorce rate. Optimistic people tend to have better physical and mental health, which leads to fewer health problems. Additionally, optimistic people tend to be more successful in their careers and finances, which can lead to higher income and better financial stability. Finally, optimistic people tend to have better relationships, including lower divorce rates, as they are better able to handle conflicts and maintain positive attitudes toward their partners.
In summary, learned optimism has a range of benefitsfor individuals, including better physical and mental health, greater success in work and education, better relationships with others, and improved resilience. These benefits make learned optimism an important skill for individuals to develop in order to lead happier, healthier, and more successful lives.
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b) What are the magnitude and direction of the velocity of the car at t= 8 sec?
c) What is the magnitude and direction of cars acceleration at t=8 sec