A mass of 100 g strikes the wall with a speed of 5 m s-1 at an angle as shown in figure and it rebounds with the same speed. If the contact time is 2 × 10-3 s, what is the force applied by the wall?
A N to right
B 250 N to right
C N to left
D 250 N to left
The options are royally messed up.
______ nerves carry messages from the sense organs to the brain or spinal cord only while_______ nerves carry messages from the brain or spinal cord to the organs only.
A Mixed, Sensory
B Motor, Mixed
C Sensory, Motor
D Motor, Sensory.
The answer should be c. We have three types of nerves: motor nerves that carry messages from brain or spinal cord to motor organs only, sensory nerves that carry messages from sensory organs to spinal cord or brain only and mixed nerves that carry messages to and from both sides.
The diagram shows a circuit tester. Which objects will cause the light bulb to go off when placed in the circuit tester?
(a) Pencil lead (graphite)
(b) Steel ball
(d) Aluminium foil
Select a figure from the options which does not satisfies the same condition of placement of the dots as in Fig. (X).