A small ball of mass 0.2 kg starts motion from rest at A by means of a compressed
spring with compression 0.5 m and spring constant k as shown in Fig.1 to move on a
rough horizontal plane
µk =0.4 and passes by point B to start motion inside a smooth tube until it reaches C
to move as a projectile and finally enters the shown net at D.
a) Study the motion of the ball as a projectile and determine VC.
b) Applying the principle of work and energy and deduced the value of the spring
constant k.

can you make it more obvious. i can't see it properly

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

hope this is what you're talking about

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only