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6.5=0(3.6)+1/2(3.6)
Question 10 : if Vector P = 5i -2j and Q=3i+3j and R=4i-j . What is P+Q+R?
12i
14i
7i
6i
Question 11 : If you run on a winding path from point A to point B and travel a distance of 240m in 20sec then your average speed is
20m/s
6m/s
12m/s
16m/s
Question 12 : When a body accelerates in motion it means that its
path is linear
velocity is uniform
velocity changes continously
None of these
Question 13 : The scalar product of any two vectors at right angles to each other is always
90
None of these
zero
1
Question 14 : If a force of 40N acting in the direction due East and a force of 30N is acting in the direction due North. Then the magnitude of the resultant forces will be
30N
40N
20N
50N
Question 15 : The degree of hotness or coldness of a body is called
kelvin
heat
pressure
temperature
Question 16 : In a circular motion which of the following quantities is constant
accelaration
velocity
time
mass
Question 17 : Newton's second law states that the rate of change of momentum is directly proportional to the
energy
force
pressure
power
Question 18 : the change in the thermo-electric e.m.f per degree Celsius in temperature between the hot and cold junctions is known as
clinical power
electric
power
thermo-electric power
Question 19 : A Scalar quantity has only
direction
velocity
magnitude
time
Question 20 : The thermometer that is constructed by using the Seebeck effect is known as
clinical
Thermo-electric
mercury
None of these
Question 6 : The scalar product of any two vectors at right angles to each other is always
90
zero
None of these
1
Question 7 : If you run on a winding path from point A to point B and travel a distance of 240m in 20sec then your average speed is
16m/s
12m/s
20m/s
6m/s
Question 8 : The dimension of coefficient of linear expansion is
K
degrees
L
Lxdegrees
Question 9 : Newton's second law states that the rate of change of momentum is directly proportional to the
pressure
energy
force
power
Question 10 : In a circular motion which of the following quantities is constant
velocity
mass
accelaration
time
Question 1 : Velocity is defined as
distance/time
variation/time
displacement/time
speed/time
Question 2 : A Null vector is a vector whose magnitude is
zero
continous
very large
available
Question 3 : When a body accelerates in motion it means that its
path is linear
velocity is uniform
None of these
velocity changes continously
Question 4 : If a force of 40N acting in the direction due East and a force of 30N is acting in the direction due North. Then the magnitude of the resultant forces will be
20N
40N
50N
30N
Question 5 : the change in the thermo-electric e.m.f per degree Celsius in temperature between the hot and cold junctions is known as
electric
power
clinical power
thermo-electric power
Explain why musicians in an orchestra are seated in a semi-circular pattern, instead of all side by side.
To celebrate summer break some non physics many students decide to make a waterslide. These non-physics students decide to put one end of the slide on 820 m high roof at Mooney and the other end in the teachers parking lot heading out to Erie Street The slide ends 5 m before the street and makes an angle of 26.5°. The physics students however are worried that students will slide into the street and incoming traffic. You determine the waterslide friction will be negligible but the pavement will have a coefficient of friction with clothes of .90. How far will the students slide on the pavement
A car decelerates uniformly from 20ms to rest in 12seconds, then reverses with uniform acceleration to its original starting point also in 4seconds.
a.Draw a v-t graph
A car decelerates uniformly from 20ms to rest in 12seconds, then reverses with uniform acceleration to its original starting point also in 4seconds.
a.Draw a v-t graph
a boy pushes a box with a mass of 20kg with a force of 150N at a 45° angle towards the bottom of the x axis. Calculate the a) friction force and b) acceleration of the box. The friction coefficient with the floor is 0.2.