Efficiency = 1000/2000 = 0.5 = 50%
1 is c
2 is c
3 is d
4 is b
5 is d
6 is d
7 is a
8 is a
9 is c
10 is d
i hope my answers help you
227kj Because The first thing to do here is to calculate the energy of a single photon of wavelength equal to
527 nm
, then use Avogadro's number to scale this up to the energy of a mole of such photons.
1j=1newton*meter
force=mass*accel
200N=55x
200/55=3.636......
3.636...-2=1.636.....
1.636 is the deceleration resulting from friction hence the force of friction is 1.636*55=90newtons
90newtons*distance of 10 meters= 900 j of work done by friction
Answer:
distance=10km=10*1000=10000m
time=5min=5*60=300sec
average speed=distance/time
= 10000/300=33.33m/s
Explanation:
