Answer:
D)
Explanation:
Force of gravity isn't as strong on the moon, for example. Weight can change based on location, it is not a constant.
Answer:
Neither the source or wall is moving so the sound takes 3 sec to get to the wall and 3 sec to return
D = 3 * v = 330 m/s * 3 sec = 990 m
The ultimate cause of earth's winds is solar energy. when sunlight strikes Earth's surface,it heats that surface differently. Newly turned soil, for example,absorbs more heat than does snow. uneven heating of Earth's surface,in turn, cause difference in air pressure at various locations. heated air rises, creating an area of low pressure beneath. cooler air descends,creating an area of high pressure. since the atmosphere constantly seeks to restore balance,air from areas of high pressure always flow into adjacent areas of low pressure. this flow of air is wind. the difference in air pressure between two adjacent air masses over a horizontal ditance is called the pressure gradiant force. the greater the difference in pressure, the greater the difference pressure, the greater the force and tje stronger the wind
Answer:
Explanation:
a ) radius of star R = 18 x 10³ m
time period of rotation T = .86 s.
angular velocity ω = 2π / T
= 2 X 3.14 / .86
= 7.3 radian / s .
velocity required
= ω R
7.3 x 18 x 10³
= 131.4 m /s
b )
centripetal acceleration
= ω² R
= ω R ω
= 131.4 x 7.3
959.22 m/s²
c )
If the neutron star rotates faster , both velocity of the particle on the equator
and centripetal acceleration increases.
Complete Question
The complete question is shown on the first uploaded image
Answer:
a
b
Explanation:
From the question we are said that
The mass of the shed is
The pulling force is
The angle is
The distance covered is
The kinetic force is
Generally the work done is mathematically represented as
=>
=>
Generally according to the work-energy theorem
Here is total work done which is mathematically represented as
=>
=>
Also is the change in kinetic energy which is mathematically represented as
Here u is the initial velocity of the shed when at rest
=>
So
=>
=>