Answer:x=23.4 cm
Explanation:
Given
mass of block 
inclination 
coefficient of static friction 
coefficient of kinetic friction 
distance traveled 
spring constant 
work done by gravity+work done by friction=Energy stored in Spring






The moon is between the sun and earth.
The side where the light from the sun hits the moon is facing away from earth.
Answer: A. X-rays
Explanation:
X-rays have the shortest wavelength and the highest energy of all of the options given.
Answer:
a)
b)
c)
d)
e)
Explanation:
Given that:
- initial speed of turntable,

- full speed of rotation,

- time taken to reach full speed from rest,

- final speed after the change,

- no. of revolutions made to reach the new final speed,

(a)
∵ 1 rev = 2π radians
∴ angular speed ω:

where N = angular speed in rpm.
putting the respective values from case 1 we've


(c)
using the equation of motion:

here α is the angular acceleration



(b)
using the equation of motion:





(d)
using equation of motion:



(e)
using the equation of motion:



Answer:
that is going at a constant rate
Explanation: