Answer:
The resistance will be twice the original resistance
Explanation:
This is a fairly simple question, the formular for the resistance of a wire is given as
R = rho *length / area
Where R = resistance
Rho = resistivity
L = length
A = area
Since the density and area are constant I.e they do not change
R/ length = rho/ area
The initial length is given as L, when this length is stretched to twice its original length ,it becomes 2×L = 2L
Let x represent the resistance when the length is doubled
R/ L = x / 2L
x = 2LR / L ; dividing by L
We have that x = 2R ; twice the resistance
Answer:
Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.
Explanation:
Hope this helps:)
1). The little projectile is affected by friction all the way through the block.
Friction robs some kinetic energy.
2). The block is affected by friction as it scrapes along the top of the post.
Friction robs some kinetic energy.
3). The block is also affected by friction with the air (air resistance) as it
falls to the ground. Friction robs some kinetic energy.
Answer:
physics, escape velocity is the minimum speed needed for an object to escape from the gravitational influence of a massive body. The escape velocity from Earth is about 11.186 km/s (6.951 mi/s; 40,270 km/h; 25,020 mph)[1] at the surface. ... [2] Speeds higher than escape velocity have a positive speed at infinity.
