Its velocity is 250 per second in the direction of 35 degrees.
Answer:
544 J
Explanation:
Potential energy at top = kinetic energy at bottom + work done by friction
PE = KE + W
mgh = ½ mv² + W
W = mgh − ½ mv²
Given m = 18.0 kg, h = 3.40 m, and v = 2.48 m/s:
W = (18.0 kg) (9.8 m/s²) (3.40 m) − ½ (18.0 kg) (2.48 m/s)²
W = 544 J
Answer:
(a) 1.3 x 10^6 Hz
(b) 76.73 cm
Explanation:
(a)
the formula for the frequency is given by
f = B q / 2 π m
where, B be the strength of magnetic field, q be the charge on one electron, m is the mass of one electron.
B = 46.7 micro tesla = 46.7 x 10^-6 T
q = 1.6 x 10^-19 C
m = 9.1 x 10^-31 kg
f = (46.7 x 10^-6 x 1.6 x 10^-19) / (2 x 3.14 x 9.1 x 10^-31) = 1.3 x 10^6 Hz
(b) K = 114 eV = 114 x 1.6 x 10^-19 J = 182.4 x 10^-19 J
K = 1/2 mv^2
182.4 x 10^-19 = 0.5 x 9.1 x 10^-31 x v^2
v = 6.3 x 10^6 m/s
r = m v / B q
Where, r be the radius of circular path
r = (9.1 x 10^-31 x 6.3 x 10^6) / (46.7 x 10^-6 x 1.6 x 10^-19)
r = 0.7673 m = 76.73 cm
A diatomic molecule has two atoms. The diatomic elements are hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine and iodine.
What assignment? theres no picture
