Answer:
 10000N
Explanation:
Given parameters: 
Mass of the car  = 1000kg 
Acceleration = 3m/s² 
g  = 10m/s² 
Unknown: 
Weight of the car  = ? 
Solution: 
To solve this problem we must understand that weight is the vertical gravitational force that acts on a body. 
  Weight  = mass x acceleration due to gravity 
So; 
     Weight  = 1000 x 10  = 10000N
 
        
             
        
        
        
Answer: An jack makes changing a tire easier because it lifts up the car to get the tire off of the ground.
Explanation:
 
        
             
        
        
        
Answer:
The non-relativistic kinetic energy of a proton is 
The relativistic kinetic energy of a proton is 
Explanation:
Given that,
Mass of proton 
Speed  
 
We need to calculate the kinetic energy for non relativistic 
Using formula of kinetic energy

Put the value into the formula


We need to calculate the kinetic energy for relativistic 
Using formula of kinetic energy



Hence, The non-relativistic kinetic energy of a proton is 
The relativistic kinetic energy of a proton is 
 
        
             
        
        
        
Weather is caused by different levels of humidity and the difference in the temperature of air which causes wind patterns. Energy from the sun evaporates the water on land. Air also heats up which brings up the water vapor to the atmosphere. This increases the humidity and the chance of rain. When hot is found near the land, this will create a high pressure which will prevent the formation of clouds and produce a fair weather.
        
             
        
        
        
Answer:
240 ohms
Explanation:
From Ohms law we deduce that V=IR and making R the subject of the formula then R=V/I where R is resistance, I is current and V is coltage across. Substituting 120 V for V and 0.5 A for A then
R=120/0.5=240 Ohms
Alternatively, resistance is equal to voltage squared divided by watts hence 