Answer:
The temperature of the oven is: T2= 309.86 ºC.
Explanation:
α= 0.00446 1/ºC
R1= 14 Ω
R2= 31.1Ω
T1= 36ºC
R2= R1 * {1+α * (T2-T1) }
T2= {[(R2/R1)-1] * 1/α} + T1
T2= 309.86ºC
Answer:
Radioactive decay: is the process by which an unstable atomic nucleus loses energy by radiation.
Half-life: in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive material to decrease by one-half.
Radiometric dating: is a method used to date rocks and other objects based on the known decay rate of radioactive isotopes.
Answer:
1. Velocity match with B
2. Speed watch with E
3. Gravity match with C
4. Deceleration match with A
5. Newton match with D
Explanation:
1.)
Velocity is defined as the time rate of change of displacement. It is a vector quantity. So it has certain direction as mention in option B. So B is the correct matching.
v = Δd/Δt
2.)
Speed is defined as the time rate of change of distance. It is a scalar quantity. It is same as velocity but only difference is that velocity has magnitude as well as direction but speed has only magnitude. As in option E, direction not mentioned. So E is the correct matching.
3.)
Gravity is the force of attraction between any two objects, two masses. It is not only the force between body and the Earth but it is the force that exist between any two bodies in the universe. C is the correct matching.
4.)
Deceleration is actually the acceleration but in the opposite direction. It is also called negative acceleration. When the velocity of the object increasing it is acceleration and when velocity decreasing it is called deceleration. It is always opposite direction to velocity. So A is the correct matching.
5.)
Newton is the name of the scientist. Also it is the unit of force in metric system. Here newton means unit of force because n of newton in small letter. From Newton's second law of motion
F = ma
= (kg)(m/s²)
= N
Thus,
N = kgms⁻²
Option D is correct matching.
Answer:
(B) Boundary work
(D) Heat
Explanation:
Boundary work and heat quantitatively describe the transition between equilibrium states of thermodynamic systems. They are not only a function of the initial and final states, but also of the successive intermediate states through which the system passes, this is, depend on the path taken to reach one state from another. Thus, are path functions.