27 A battery of e. m.f 8 volts and internal resistance 1 Ohm is connected
to a straight wire of length 10 cm, of cross sectional area 3 x 10-8 m² and its resis-
tivity 4.5 x 10-6 12. m. calculate the magnetic flux density at a point which lies at
normal distance 20 cm away from the center of the wire. d Lase

Apendulum has a mass of 1.5 kg and starts at a height of 0.4 m. if it is released from rest, how fast is it going when it reaches the lowest point of its path? acceleration due to gravity is g = 9.8 m/s2. a. 2.8 m/s b. 0 m/s c. 5.9 m/s d. 4.3 m/s

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line