Abear is walking through a forest with a velocity of 1.5 m/s when it spots some honey 200 meters ahead. three seconds later, it is running toward the honey with a velocity of 7.5 m/s. what is the bear's acceleration?

The bear's acceleration is

Explanation:

The magnitude of the acceleration can be calculated using the following equation :

(I)

Where ''a'' is the acceleration

Where ''dv'' is the speed variation

Where ''dt'' is the time variation

In this exercise, the time variation is equal to 3 seconds because it is the amount of time in which the bear accelerated from to

The speed variation is equal to :

Where ''vf'' is the final speed and ''vi'' is the initial speed.

Finally, we can calculate the bear's acceleration using the equation (I) :

We find that the bear's acceleration is

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

connect the batteries in series and hope