Answer:
14.0 m
25.1 m/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
Distance traveled in the reaction time
Distance = Speed × Time
Distance in which the car will stop is 10+20 = 30.0 m
So, the car will not hit the deer
Distance between the car and deer is 44-30 = 14.0 m
Maximum speed of the car by which it will not hit the deer is 25.1 m/s
Answer:
10 Pascal
Explanation:
pressure = 10 Pa
Answer:
momentum = 1.147 × kg-m/s
Explanation:
given data
wavelength = 575 nm = 575 × m
slit width S = 0.036 mm = 0.036 × m
diffraction pattern D = 4.2 m
to find out
width of central bright fringe, angle of 3rd dark fringe and momentum of photon
solution
we will apply here formula for central bright fringe width formula that is
width = ...............1
put here all these value
width =
width = 0.134 m
so width of central bright fringe is 0.134 m
and
for angle we will formula
slit width × sin∅ = n × wavelength ............2
here n is no of dark fringe
put here value and find angle
0.036 × × sin∅ = 3 × 575 ×
solve and we get
∅ = 2.75°
so angle to the 3rd dark fringe is 2.75°
and
momentum formula is
momentum =
here we know planck constant for photon is 6.6 ×
so
momentum =
momentum = 1.147 × kg-m/s