In a loop-the-loop ride a car goes around a vertical, circular loop at a constant speed. the car has a mass m = 228 kg and moves with speed v = 16.74 m/s. the loop-the-loop has a radius of r = 11.3 m.

1.what is the magnitude of the normal force on the care when it is at the bottom of the circle? (but as the car is accelerating upward.)
2.what is the magnitude of the normal force on the car when it is at the side of the circle (moving vertically upward)?
3.what is the magnitude of the normal force on the car when it is at the top of the circle?
4.compare the magnitude of the cars acceleration at each of the above locations:

a. abottom = aside = atop
b. abottom < aside < atop
c. abottom > aside > atop
5.what is the minimum speed of the car so that it stays in contact with the track at the top of the loop?

For problems 1-3, consider a simple dc brush motor with a permanent magnet stator. with an an consider a simple dc brush motor with a permanent magnet ae supply voltage of 100 v, the no-load speed of the motor is 1000 rpm. this motor can provide a torque of 1.9 n-m at 800 rpm drawing a current of 2 a current are both zero at no load.) 1. with an armature supply voltage of 100 v, the motor is operated at 900 rpm. what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input? what is the energy efficiency of the motor? with an armature supply voltage of 100 v, the motor is operated at 1100 rpm (where it acts as a generator). what torque input is required? what mechanical power is required what current is generated? what is the electrical power generated? what is the energy efficiency of the motor acting as a generator? 2. with an armature supply voltage raised to 120 v, the motor is operated at 1000 rpm. what is the no-load speed? what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input what is the energy efficiency of the motor? 3.

What is the temperature in degrees celsius of a substance with a tempature of 49k

Which of the choices are parts of an atom? select all that apply. a.) compound b.) electron c.) neutron d.) molecule e.) photon f.) proton g.) element