Question

2. Fill in the blanks:
(a) The speed of violet light is ……… whereas speed of red light is …….… .
(b) The volume of ………… solids can be measured by using displacement method.
(c) The apparent weight of floating body is ………. .
(d) 1 H.P = ………W.

Answer 1

1.faster,slower

2.Human body and odly shaped object

3.Zero

4.745.7 w

Explanation:

Hope it help u

Answer 2

Answer:

(a) slow, fast.

(b) human body and other oddly shaped objects.

(c) zero

(d) 746 (approx)

Explanation:

(a) Red light is faster than violet light because red light have longer wavelength while violet light have shorter wavelength.

(b) The volume of these objects can be found by water displacement. A volume of water sufficient to cover the object is placed in a graduated cylinder and the volume read. The object is added to the cylinder and the volume read again. The difference between the two volumes is the volume of the object.

(c) The apparent weight of a floating object is zero. This effect is quite different from the accelerating lift examples. A floating or immersed object is not accelerating upwards or downwards, so there can be no net force. In fact, buoyancy provides a supporting force exactly as the ground does.

(d) The horsepower (hp) is a unit in the foot-pound-second ( fps ) or English system, sometimes used to express the rate at which mechanical energy is expended.A power level of 1 hp is approximately equivalent to 746 watt(W).