Answer:
40 J
Explanation:
q = magnitude of charge on the old bead = 2.0 C
U = Electric potential energy of old bead at point A = 20 Joules
V = Electric potential at A
Electric potential energy is given as
U = q V
20 = (2.0)V
V = 10 volts
Electric potential at point A remains unchanged when new bead of charge 4.0 C is placed there
q' = magnitude of charge on new bead = 4.0 C
V = Electric potential at A = 10 volts
U' = Electric potential energy of new bead at point A
U' = q' V
U' = (4.0) (10)
U' = 40 J
It depends on the monopolist, it's in their best interest to use resource efficiently though because it can result in more profit naturally
Answer:
Wavelength,
Explanation:
Given that,
Speed of the sound in the rat tissues, v = 1500 m/s
Let is the wavelength of an ultrasonic wave. The speed of a wave is given by the relation as follows:
Let us assume that the frequency of ultrasonic wave is 2.3 MHz.
So, the wavelength of an ultrasonic wave is . Hence, this is the required solution.
As we know that as per Newton's II law we have
here we will have
= change in momentum
= time interval in which momentum is changed
now in order to have least injury during jumping we need to have least force on the jumper
so in order to have least force we can say that the momentum must have to change in maximum time so that amount of force must be least
So we need to increase the time in which momentum of the system is changed