Answer:
The power drawn by the toaster is closest to:
(A) 370 W
Explanation:
First we calculate the resistance of the nichrome wire (R).

Where radious (r), resistance coefficient (p), and Length (L)

After replace the value in the ohm law power formula to obtain the power consumed:

 
        
             
        
        
        
Answer:
The magnetic field strength and the electrons' energy are 0.077 T and 0.8906 eV.
Explanation:
Given that,
Diameter = 2.62 mm
Frequency = 2.15 GHz
(A). We need to calculate the magnetic field strength
Using formula of the magnetic field strength

Where, f = frequency
e = charge of electron
Put the value into the formula


(B). We need to calculate the energy of electron
Using formula of energy



The energy in eV



Hence, The magnetic field strength and the electrons' energy are 0.077 T and 0.8906 eV.
 
        
             
        
        
        
Answer:
The horizontal distance is 0.64 m. 
Explanation:
Initial velocity, u =2.5m/s 
The maximum horizontal distance is 

 
        
             
        
        
        
Answer: C 
Reflection 
Explanation: Light travels in a straight line. Reflection is one of the properties of light. And this is the property in which mirror make use of. The ability of light to bounce back. It's this bouncing back characteristics of light ray that eventually produce the image of an object by the mirror. 
If the light ray is absorbed, no image will be produced.