the mass is 7 kilograms.
mass is constant and does not change in different environments (such as different gravitational fields) as it is "stuff". What changes is weight, or the force felt by gravity on the mass due to the equation: F=MA, were F is the weight of the object being recorded, M is the mass (constant in this case), and A is the acceleration (in this case gravity). A bowling ball would have the same mass on earth as on the moon, but its weight would be different due to the different acceleration due to gravity.
The amplitude of a wave tells you how much energy it's carrying.
You might see light waves with large amplitudes if you're 10 miles from the sun, or if your little brother comes and points a flashlight right into your eye.
A- plane mirror because its surface is plane
<span>If the </span>base<span> has 6 sides, the </span>prism<span> will also have 6 </span>lateral faces. It will all depend how many sides the base has and the lateral face of the prism will equal to the number of sides of the base. In short, if the base<span> has 'x' sides, then the </span>prism<span> will </span>have<span> 'x' </span>lateral faces<span>.</span>