Answer: 1. The field energy will increase
2. The energy increases, and the lines of force are denser
3. It points toward the field of earths magnetic poles
4. 1 and 2 only
5. 2, 4, 1, 3
Explanation: just took it
Kind of a trick question:) you don't need to know how far from the earth he is just use
F=ma
F=78kg*9.8m/s^2=764.4N
Or 171.8 lbs
Answer:
So option (b) will be correct option
Explanation:
We have given that there is a step up transformer in which number of turns in primary coil is 15
That is,
Primary voltage , and secondary voltage
We have to find the number of turns in the secondary \
We know that for the transformer
So option (b) will be correct option
Answer=C
Supersonic speed is a rate of travel that exceeds the speed of sound. The speed of sound is Mach 1
a. Mach 0.5
b. Mach 1
c. Mach 1.5
C is the correct answer. Mach1.5>Mach1
a is less than the speed of sound, therefore it doesn't exceed it.
Mach0.5<Mach1
b is exactly the speed of sound, so it doesn't exceed it.
Mach1=Mach1
Answer:
The net applied force responsible for the acceleration is 15.3 N.
Explanation:
According to Newton's second law of motion, the net unbalanced force acting on any object is directly proportional to the product of mass and acceleration acting on that object. So
As the mass of the object is given as 5.1 kg and the acceleration attained by the object or scooter is 3 , then the net applied force on the scooter is
.
Thus, the net applied force responsible for the acceleration is 15.3 N.