Answer:
Explanation:
Given
mass of coaster car =m
radius of loop is r
At highest point weight Provides the centripetal Force
weight will act downward and centripetal force in upward direction.
centripetal force=


Answer:
The vibrations from sound waves cause our ears to send signals to our brains to create sound. The speed of sound waves will determine the sound's pitch, or how high or low something sounds. Sound waves are important because they allow us to hear important messages and emergency signals to protect ourselves.
Explanation:
I hope this helps :)
Answer:

since the direction of force is along south so the magnetic field must be upwards
Explanation:
Force on moving charge in magnetic field is given as

here we know this is force on proton
so we have


also we know that the velocity of charge is

now from above formula we have


since the direction of force is along south so the magnetic field must be upwards
The answer is E. Short and thick while cold.
Answer:
9.3 g/cm³
Explanation:
First, convert kg to g:
0.485 kg × (1000 g / kg) = 485 g
Density is mass divided by volume:
D = (485 g) / (52 cm³)
D = 9.33 g/cm³
Rounding to two significant figures, the density is 9.3 g/cm³.