A=(Vo-V)/t=(10-0)/0.26=10/0.26=38.46m/s2
F=ma=70*38.46=2692.3N
Q out = Q in
Q mix = Q water
mcΔt sand + mcΔt water = mcΔt water
30.2 x 2.01 x (29.3-12.1) + 87.7 x 4.19 x (29.3-12.1)=m x 4.19 x (85.8-29.3)
1044.07+6320.36=m x 236.74
m = 31.11 g
Answer:
a.) The main scale reading is 10.2cm
b.) Division 7 = 0.07
c.) 10.27 cm
d.) 10.31 cm
e.) 10.24 cm
Explanation:
The figure depicts a vernier caliper readings
a.) The main scale reading is 10.2 cm
The reading before the vernier scale
b.) Division 7 = 0.07
the point where the main scale and vernier scale meet
c.) The observed readings is
10.2 + 0.07 = 10.27 cm
d.) If the instrument has a positive zero error of 4 division
correct reading = 10.27 + 0.04 = 10.31cm
e.) If the instrument has a negative zero error of 3 division
correct reading = 10.27 - 0.03 = 10.24cm
Answer:
Niels Bohr
Explanation:
Niels Bohr was scientist whose model showed electrons location around a nucleus and all in an orbit.The orbit had varying energies according to their sizes.This model further indicated that when an electron is lost or gained, radiation is absorbed or emitted.The modern atomic model was prepared from quantum mechanics which shows how matter differ in atomic and subatomic levels.In this model, the chances of finding an electron is higher where the cloud is more dense.Bohrs model resembles the electron cloud model is that they both talk about position of electrons in an atom, and the energy associated with size of the orbit occupied by the electron.