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3 years ago

Which type of stimulus is detected by photoreceptors?

Physics

1 answer:

Debora [2.8K]3 years ago

6 0

The answer should be light based on the definition of a photoreceptor

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How many seconds are in 28 hours?

kumpel [21]

Answer:

1680 seconds

Explanation:

$28 hrs * \frac{60 s}{1 hr} =1680s$

4 0

2 years ago

a 3.5 kg mass has an initial velocity of 4.0 m/s. How much force is required to increase the velocity of the mass to 8.0 m/s in

Nadya [2.5K]

Answer:

<em>4.67 N of force are required</em>

Explanation:

The second Newton's law states the net force exerted on a body of mass m that has an acceleration a, is given by:

F=m.a

On the other hand, the kinematics equations relate the acceleration with the change of speed over time, expressed as:

$\displaystyle a=\frac{v_f-v_o}{t}$

We are given the initial speed of vo=4 m/s on a mass of m=3.5 Kg, the final speed of vf=8 m/s which took t=3 seconds.

The acceleration is:

$\displaystyle a=\frac{8-4}{3}=1.33$

$a=1.33\ m/s^2$

Thus, the force is:

$F=3.5\ Kg\cdot 1.33\ m/s^2$

$F=4.67\ N$

4.67 N of force are required

6 0

3 years ago

The electric current leaves the battery through the --- complete this blank

aev [14]

The bulb

Hope this helps!

5 0

4 years ago

How much work is done (by a battery, generator, or some other source of potential difference) in moving Avogadro's number of ele

luda_lava [24]

Answer:

W = 1.5 x 10⁶ J = 1.5 MJ

Explanation:

First, we calculate the potential difference between the given 2 points. So, we have:

V₁ = Electric Potential at Initial Position = 6.7 V

V₂ = Electric Potential at Final Position = - 8.9 V

Therefore,

ΔV = Potential Difference = V₂ - V₁ = -8.9 V - 6.7 V = - 15.6 V

Since, we use magnitude in calculation only. Therefore,

ΔV = 15.6 V

Now, we calculate total charge:

Total Charge = q = (No. of Electrons)(Charge on 1 Electron)

where,

No. of Electrons = Avagadro's No. = 6.022 x 10²³

Charge on 1 electron = 1.6 x 10⁻¹⁹ C

Therefore,

q = (6.022 x 10²³)(1.6 x 10⁻¹⁹ C)

q = 96352 C

Now, from the definition of potential difference, we know that it is equal to the worked done on a unit charge moving it between the two points of different potentials:

ΔV = W/q

W = (ΔV )(q)

where,

W = work done = ?

W = (15.6 V)(96352 C)

7 0

3 years ago

Describe the history of magnetism

Anestetic [448]

Answer:

Explanation:

it is a force generated in matter by the motion of electrons within its atoms.

3 0

3 years ago