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(a) Show that the charge of B is -100nC.
(b) Calculate the resultant force exerted on C due to A and B.
(c) Show without any calculation, that the resultant force on C cannot be zero if it is now placed between A and B.
Steven walks 11 feet to the East, 18 feet to the west, and 20 feetA. What is the total distance traveled?B. What is Steve’s total displacement?Pleasee helpp!!
A car travelling at 20 m/s collides with a stationary lorry and is brought to rest in just 0.02s, Calculate the deceleration of the car.
1. Write some points due to which braking distance of a running car may increase?
2. Write down the relationship between stopping distance, braking distance and thinking distance.
3. Write dawn the relationship between acceleration, initial velocity and final velocity.
4. What is Weight? What is the unit of Weight? Is it vector or Scalar ?
5. Write down the relationship between weight, mass and gravity?
1. Draw a graph to show that acceleration is proportional to inverse of mass?
2. Draw a graph that relates the mass and acceleration of a moving object?
3.What is the relationship between force, mass and acceleration?
4. What is deceleration?
5. What do you mean by one newton of force?
1. Write dawn the relationship between speed, distance and time. What is the unit of speed? Is it scalar or vector? Why?
2. Write down the equation of average speed?
3. What is instantaneous speed?
4. What does distance time graph give?
5. What is the meaning of the gradient of distance time graph?
6. What is the equation of velocity? What is the unit? Is it vector or scalar?
7. What is acceleration? What is the unit of acceleration? Is it vector or scalar?
8. What do you mean by uniform acceleration?
9. What does the gradient of velocity-time graph show?
10. Write down the equation of average velocity.
11. what does the area of velocity-time graph give?
A certain metal of work function 1.6 eV is irradiated with an ultra violent light of wave length 3.6*10⁴ m. Calculate the maximum
Kinetic energy of ejected electrons in joules
And speed of an emitted electrons
when a truck is moving at a speed of 10ms. when the driver seed charge in front, he slow and decelerated at -1.5ms^_2. Him reaction time to hit the break was 0.5sec. will the truck hit the child?
An object moving in a circular path with a constant speed of 2.0 m/s changes direction by 30⁰ in 3.0 s. What is the magnitude of the average acceleration over the 3.0 second interval?
A piano mover pushes a piano (m = 275 kg) with an applied horizontal of 1075 N. This causes the piano to accelerate, from rest, to a final velocity of 0.92 m/s over a time of 5.0 s. Calculate:
a) The acceleration of the piano. (3 marks)
b) The net force acting on the piano. (3 marks)
c) The normal force acting on the piano. (3 marks)
d) The coefficient of kinetic friction between the piano and the floor.
