Answer:
There are three species of land iguana found in the Galapagos Islands. The well-known yellowish land iguanas include Conolophus subcristatus, native to six islands, and Conolophus pallidus, found only on the island of Santa Fe.
Answer:
- Decreasing the resistance
- Using a shorter length
- Using a smaller area wire
Explanation:
Formula for conductance in wires is;
G = 1/R
Where;
G is conductance
R is resistance
This means that increasing the resistance leads to a larger denominator and thus a smaller conductance but to decrease the denominator means larger conductance.
Thus, to increase the conductance, we have to decrease the resistance.
Resistance here has a formula of;
R = ρL/A
Where;
ρ is resistivity
L is length of wire
A is area
Thus, to decrease the resistance, we will have to use a shorter length and smaller area of wire.
Answer:
Explanation:
The time period of a simple pendulum is given by :
L is length of the pendulum and g is acceleration due to gravity
At the bottom of Death valley, g = 9.8 m/s²
We need to find the value of g if the period of the pendulum is decreased by 5.00%.
T'=(T-0.05T)= 0.95 T
So, the new value of acceleration due to gravity is .
Answer:
Temperature=3.86*10^7K
V1=1.4
Explanation:
Deuterium (2H), when heated to sufficiently high tempera- ture, undergoes a nuclear fusion reaction that results in the production of helium. The reaction proceeds rapidly at a temperature, T, at which the average kinetic energy of the deuterium atoms is 8 × 10216 J. (At this temperature, deu- terium molecules dissociate completely into deuterium atoms.)
(a) Calculate T in kelvins (atomic mass of 2H 5 2.015).
(b) For the fusion reaction to occur with ordinary H atoms, the average energy of the atoms must be about 32 × 10216 J. By what factor does the average speed of the 1H atoms differ from that of the 2H atoms of part (a)?
k.E =3/2kT
K.E is the kinetic energy
k=boltzmann constant
T=Temperature in kelvin
juxtaposing the given values we have
T=2(KE)/3k
T=2*8*10^-16/(3*1.38*10^-23)
T=3.86*10^7K
Temperature=3.86*10^7K
b. average speed V=
R is the gas constant
T absolute temperature in kelvin
M molar mass
since R.T,PI are constant
we are comparing between hydrogen and helium particles
V=
V1/V2=
V1=V2
V1=V2* 1.4
V1=1.4
Height = work done / weight so 800 / 200 = 4 m