The greenhouse effect<span> occurs when Earth's atmosphere traps </span>solar<span>radiation ... infrared (IR) and other </span>types<span> of radiation that are invisible to the human eye. UV radiation has a shorter wavelength and a higher </span>energy<span> level </span>
Answer:
2)
Series circuits = D & E
parallel circuits = C & F
3)
Circuit C is connected in parallel and circuit D is connected in series.
Circuit D and E are the same, despite the switch is located in a different position, they are working in series.
Circuits C and F are the same, they are connected in parallel.
There will be only one bulb in on mode and it is in the circuit F.
Explanation:
In the attached image, we can see a serial circuit and a parallel circuit. Serial circuits are characterized by sharing the same current, if the current step is interrupted (opening the switch), the current will not flow and no element (light bulbs off) will work. When a circuit is connected in parallel, they share the same voltage within the circuit. All resistive elements or bulbs are located between nodes 1 and 2, so they share the same voltage.
The special case are the circuits C and F, both are connected in parallel. But in circuit C the switch is near to the voltage source, therefore when the switch is unplugged there won't be the main current and the bulbs will be off.
In-circuit F, when the switch is off only the bulb near to the switch won't work the other bulb will be working because the main current is passing through it.
Answer:
Difference is given below.
Explanation:
The main difference between beneficial and harmful friction is that beneficial friction is necessary for performing different activities while on the other hand, harmful effect of friction is destroy different parts of products and machines. examples of beneficial friction are walking, holding things, rubbing hands to produce heat, running etc whereas examples of harmful friction are destruction of sole, slipping, tearing of machine's part, Wet roads and Mudslides etc.
Answer:
The force that must be provided to accelerate the object = 302.196 N
Explanation:
<em>Force</em>: Force can be defined as the product of mass and acceleration. The S.I unit of force is Newton (N).
Ft - W = ma............ Equation 1
Ft = W + ma .......... Equation 2
Where Ft = force provided, W = weight of the object, m= mass of the object, a = acceleration of the object.
<em>Given: mass = 64 lb, g = 32 ft/s² a = 2 ft/s²</em>
<em>Conversion: (i) from 64 pounds to Kg = 64/2.2046</em>
<em> = 29.03 kg</em>
<em> (ii) from 2 ft/s² to m/s² = 0.3048 × 2 = 0.6098 m/s²</em>
<em> (iii) from 32 ft/s² to m/s² = 0.3048×32 = 9.8 m/s².</em>
and W = mg = 29.03 × 9.8 = 284.494 N,
Substituting these values into equation 2,
Ft = 284.494 + 29.03×0.6098
Ft = 284.494 + 17.7
Ft = 302.196 N
Therefore, the force that must be provided to accelerate the object = 302.196 N
