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3 years ago

Scientists use the term _____________ to describe the concept of energy flow through living systems

Physics

1 answer:

Hatshy [7]3 years ago

3 0

Answer:

Energy or calorific flow.

Explanation:

Energy flow, which is also called the calorific flow, is defined as the flow of energy through an ecosystems food chain. It is the focus of study in ecological energetics and also how energy is converted from one form to another in an ecosystem.

Example of a typical energy flow: Solar energy is fixed by the photoautotrophs, called primary producers, like green plants which uses the energy for photosynthesis.

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Which device uses a rotating magnetic field to produce an electric current?

Kay [80]

The correct answer is C) a motor.
In particular, we are talking about an AC motor, which produces an alternating current. In an AC motor, a coil is immersed in a rotating magnetic field. Due to the motion of the magnetic field,the angle between the direction of the field and the surface enclosed by the coil changes. As a result, the magnetic flux through the coil changes over time (the magnetic flux is given by:
 $\phi=BAcos\theta$ 
where B is the intensity of the magnetic field, A is the area enclosed by the coil and $\theta$ is the angle between the direction of B and the perpendicular to the plane of the coil). For Faraday-Newmann-Lenz law, this change in flux induces an electromotive force (emf) into the coil, according to:
 $emf=- \frac{d \Phi}{dt}$ 
where the numerator is the variation of magnetic flux and dt is the time interval. This emf in the coil produced an electrical current in the circuit.

7 0

3 years ago

Read 2 more answers

Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is attached to the more massive b

ivanzaharov [21]

Answer:

Explanation:

a ) Conservation of momentum is followed

m₁ v₁ = m₂ v₂

3m x 2 = m v

v = 6 m/s

Total kinetic energy

= 1/2 x .35 x 6 ² + 1/2 x 1.05 x 2 ²

= 8.4 J

This energy must be stored as elastic energy in the spring which was released as kinetic energy on burning the cord.

Yes , the conservation of momentum will be followed in the bursting apart process. Only internal forces have been involved in the process. Two equal and opposite internal forces are created by spring which creates motion and generates kinetic energy.

4 0

3 years ago

How is the earth a cracked hard boiled egg

xz_007 [3.2K]

Answer:

the earth isn't a cracked hard boiled egg, but I'd guess they mean layers. A thin shell/crust and the yolk and whites of the egg represent layers of the earth

Explanation:

6 0

3 years ago

The nine ring wraiths want to fly from barad-dur to rivendell. rivendell is directly north of barad-dur. the dark tower reports

Katarina [22]

The west constituent of their sequence needs to cancel out 58 mph crosswind. Subsequently a northwest direction is a 45-degree angle up to even with the destination. That is the third point out of the triangle and the right angle is at the destination. The top side is the west constituent of their flight the vertical side is their resultant travel and the hypotenuse is their definite distance flown. Since the 58 mph crosswind was negated by flying northwest, the distance from the beginning to the destination must be the same distance as the west component of their travel. The hypotenuse is square root of twice the side since it has 2 identical sides.

c = sqrt (58^2 + 58^2) = sqrt (6728) = 82.02

Alternative solution:

c = sqrt (2) * 58 = 1.414 * 58 = 82.02

Therefore, they have to fly 82.02 mph

5 0

3 years ago

Read 2 more answers

Calculate the molar heat capacity of a monatomic non-metallic solid at 298K which is characterized by an Einstein temperature of

Ratling [72]

Answer: 5.5 ×10^-2 ×3R. Non metals that are solid at room temperature has mono atomic atoms that has only 3 translational modes.

This is why their constant volume molar heat capacities are measured in multiples of 3R.

Explanation: see attachment

3 0

3 years ago