They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
Answer: 5.41 V
Explanation:in order to explain this result we have to use the Ohm law given by:
ΔV=R*I where R is the resistance which is equal R= ρ*L/A . ρ is the resistivity, L the length of the wire and A is the cross section. I is the current.
Then we have
ΔV=ρ*L*I/A= 1.68 * 10^-8 Ωm*93.4 m*72.5A/2.1* 10^-5 m^2=5.41 V
Answer:
The current drawn by Horace’s reading glasses is 0.8 A.
Explanation:
Given that,
Resistance of each bulb, R = 2 ohms
Voltage of the system, V = 3.2 volts
These two bulbs are connected in series. The equivalent resistance will be 2 ohms +2 ohms = 4 ohms
Let I is the current drawn by Horace’s reading glasses. Using Ohm's law to find it such that :
So, the current drawn by Horace’s reading glasses is 0.8 A.
This region is called the magnetic field. Any object within the magnetic field will experience a force that is caused by the source (e.g. magnet)
Answer: Gravitational force
Explanation:
The law of universal gravitation states that the force of attraction (F) between two bodies is directly proportional to their masses m1 and m2, and inversely proportional to the square of the distance (R) seperating them.
Thus, it is expressed mathematically as:
F = Gm1m2/R²
where,
- G is the gravitational constant with a value of 6.7 x 10^-11 Nm2/kg2
- F is the Gravitational force (unit is Newton)
- m1 and m2 are the masses of the two bodies (unit is kilograms)
- R is the distance seperating the two bodies. (unit is metres)
Thus, the formula f=G(m1m2)/R² help us find the gravitational force.
