Answer:
Period, T = 10.86 seconds
Frequency, f = 0.092 Hz
Wavelength,
Speed, v = 3.61 m/s
Explanation:
It is given that,
A woman notices that a wave crest passes by, five more crests pass in a time of 54.0
.
The distance between two successive crests is, the wavelength of wave,
(b)Frequency of a wave is given by number of oscillations per second such that,
f = 0.092 Hz
(a) Let T is the period of the wave. It is inverse of frequency of a wave such that,
T = 10.86 seconds
(c) The distance between two successive crest or trough is called wavelength of a wave, .
(d) The speed of a wave is given by :
v = 3.61 m/s
Hence, this is the required solution.
Answer:
Force = 60.08 N
Explanation:
Given that
Diameter d = 30 mm
Holding pressure = 85 % of Atmospherics pressure
Solution
As we know that here 1 atm = 10⁵ N/m²
and pressure is known as force per unit area
pressure = ................1
put here value and we will get
F =
solve it we get
Force = 60.08 N
Answer:
Because Earth rotates on its axis from west to east
Explanation:
Answer:
(a) E = 1.25×10⁶ V/m
(b) v = 83.8×10⁶ m/s
Explanation:
Please see attachment below.
qV = electric potential energy of the electron. This is the energy converted into the kinetic energy of the motion of the electron through the plates. Kinetic energy is 1/2×mv². Where m = mass of electron = 9.11×10-³¹ kg.
q = 1.6×10-¹⁹ C.
So qV = 1/2mv² so rearranging and substituting the given quantities give the speed of the electrons.
Answer:
Explanation:
spring constant k = 425 N/m
a ) At the point of equilibrium
restoring force = frictional force
= kx = 10 N
425 x = 10
x = 2.35 cm
b )
Work done by frictional force
= -10 x 2.35 x 10⁻² x 2 J ( Distance is twice of 2.35 cm )
= - 0.47 J
= Kinetic energy remaining with the cookie as it slides back through the position where the spring is unstretched .
= 425 - 0.47
= 424.53 J
=