In which of those three situations is the magnitude of the car's acceleration the largest? In which of those three situations is the magnitude of the car's acceleration the largest? cornering at 0.85g reaching 60 mph in 5 seconds flat stopping from 70 mph in only 168 feet not enough information to determine

a) convert miles/hour to ft/seconds

60mph

1 mile=5280ft

1hr=3600secs

= 60 * 5280 / 3600 ft/s

=> acceleration

acceleration is the rate of change in velocity

= [60 * 5280 / 3600] / 5 ft/s^2

= 264/15 ft/s^2

= 264/(15 * 32) g

= 0.55 g

magnitude of acceleration in case 2

= 0.85 g

magnitude of acceleration in case 3

recall from $v^{2} =u^{2}+2as$

u=0

v^2/2s=a

velocity , a=acceleration

s=distance covered

= (70 * 5280 / 3600)^2 / (2 * 168 * 32) g

= 0.98 g

=> largest magnitude of acceleration = 0.98 g in case 3

and smallest magnitude of acceleration = 0.55 g in case 1.

5 0

3 years ago

A solid conducting sphere is placed in an external uniform electric field. With regard to the electric field on the sphere's int

Fittoniya [83]

Answer:

The answer is A. There is no electric field on the interior of the conducting sphere.

Explanation:

A solid conducting sphere in a uniform electric field will exert force on the charges in the sphere to redistribute themselves in such a way that both the charges and the field inside the sphere would vanish.

3 0

4 years ago