Answer:
Explanation:
Given
Two charges are separated by a distance d and exert a mutual attractive force F on each other.
Suppose and is the charge so force is given by
When distance is decrease to
Force is given by
divide 1 and 2
thus the new force become 9 times of previous force
Answer:
See below
Explanation:
i) Velocity of A wrt B is 15 m/s east
ii) A 30 * 25 = 750 m east B 30 *10 = 300 m east
iii) 1 minute will be 15 m/s * 60 = 900 m apart
Answer:
Infrasound vs. Ultrasound: Infrasound is sound that is below the lower limit of human hearing, below 20 Hz, and ultrasound is above the upper limit of human hearing, above 20,000 Hz. Individuals use infrasound - this recurrence run for checking seismic tremors and volcanoes, graphing rock and oil developments underneath the earth. Infrasound is described by a capacity to get around hindrances with little scattering.
For instance, a few creatures, for example, whales, elephants and giraffes convey utilizing infrasound over significant distances. Torrential slides, volcanoes, seismic tremors, sea waves, water falls and meteors produce infrasonic waves. Symptomatic ultrasound, additionally called sonography or demonstrative clinical sonography, is an imaging technique that utilizes high-recurrence sound waves to create pictures of structures inside your body. The pictures can give important data to diagnosing and treating an assortment of ailments and conditions.
Explanation:
idk how many words this is but its a start for u to add on to and i hope this helps and its in my own words - pls mark me brainiest
Answer:
The mass of the kerosene is, = 0.021 kg
Explanation:
Given data,
The mass of the empty density bottle, m₁ = 0.03 kg
The mass of density bottle filled with water, m₂ = 0.057 kg
The relative density of kerosene is, ρ = 0.8
Density of kerosene = Density of water x relative density
= 1000 kg/m³ x 0.8
= 800 kg/m³
The mass of water in the bottle,
= m₂ - m₁
= 0.057 kg - 0.03 kg
= 0.027 kg
The volume of bottle,
V = 2.7 x 10⁻⁵ m³
The mass of the kerosene,
= 800 x 2.7 x 10⁻⁵
= 0.021 kg
Hence, the mass of the kerosene is, = 0.021 kg