Answer:
a) , , b) , c) , d) , e)
Explanation:
a) The velocity function is determined by deriving the position function in time:
Velocities after 2 seconds and 4 seconds are, respectively:
b) The maximum height is reached when velocity is equal to zero:
The time when the projectile reaches the maximum height:
c) The maximum height is:
d) The projectile hits the ground when height is equal to zero:
The roots of the second order polynomial are presented below:
The first one is the only reasonable solution in physical terms.
e) The velocity of the projectile when it hits the ground is:
Highest frequency EM waves: cosmic rays and gama rays
Lowest frequency EM waves:
Radio and Tv waves
Answer:
Explanation:
As we know that current density is ratio of current and area of the crossection
now we have
so the current through the wire is given as
now we have
here we have
now plug in the values in above equation
now we have
now plug in both limits as mentioned
here R = 2.11 mm
Explanation:
acc is velocity over time and the velocity rule is distance over time ..so acc would be distance over time power2