Between 1589-1592 when he discovered projecctile motion
Answer:
E=3 x 10^4 N/c
Explanation:
The electric field strength can be found out disk with a uniform positive surface charge density by
σ= charge density
r= radius of the disk
z= position in which we have to find electric field = 15 cm
ε_0= constant ( vacuum permitivity)
putting values we get
solving we get
E=30000 N/c
E=3 x 10^4 N/c
For figure one the “+” are protons and the “-“ are electrons for the second one the middle is the nucleus and the other is the orbit
There are two main points that should be emphasized about the different types of electromagnetic radiation. The sequence from longest wavelength (radio waves) to shortest wavelength (gamma rays) is also a sequence in energy from lowest energy to highest energy
hope this helps you!✌
Density = (mass) / (volume) <== MEMORIZE THIS !
1). Mass = 50 g. Volume = 100 cm³. Density = (mass) / (volume)
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2). Volume = (length) ·(width) ·(height) = (4cm) ·(4cm) ·(4cm) = 64 cm³
Mass = 672 g. Density = (mass) / (volume)
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3). Volume = (length) ·(width) ·(height)
Length = 1 meter = 100 cm
Width = 10 cm = 10 cm
Height = 22 mm = 2.2 cm
Volume = (100 cm) (10 cm) (2.2 cm) = 2,200 cm³
Mass = 42,460 g
Density = (mass) / (volume)
