Answer:
negative ion
Explanation:
An atom that has fewer neutrons than protons and more electrons than protons is a negative ion.
The positively charged particles in an atom are the protons
The negatively charged particles in an atom are the electrons.
The charge an atom carries depends on the balance between the number of protons and electrons in an atom.
- When the number of protons is more than the number of electrons, the atom is positively charged.
- When the number of electrons is more than the number of protons, the atom is negatively charged.
Answer:
Explanation:
given data:
power P = 40W
Distance of light bulb from screen is R = 1.9 m
The light intensity considered as the light energy falling on the surface per unit area per unit time
Intensity of light can be determined by using following formula
Answer: hey here's your answer...
Explanation: We can think of a force as a push on a surface, such as the force due to gravity you exert when standing on a bathroom scale. Pressure involves the distribution of force. The scale measures force, not pressure, so your weight reading is the same no matter how you distribute your weight on the scale.
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consider the forward direction as positive and backward direction as negative. hence displacement in froward direction will be taken as positive and displacement in backward direction will be taken as negative.
= displacement in forward direction = 10 meters
= displacement in backward direction = - 5 meters
= net displacement
net displacement is given as
= +
= 10 + (- 5)
= 5 meters
Since net displacement is positive , and forward is positive direction of motion.
hence the displacement is 5 meters in forward direction.
b)
d₁ = distance traveled in forward direction = 10 meters
d₂ = distance traveled in backward direction = 5 meters
D = total distance traveled
total distance traveled is given as
D = d₁ + d₂
D = 10 + 5
D = 15 meters
