Answer:
Both Thomson and Rutherford used charged particles in their experiments.
Explanation:
Answer: Mechanical longitudinal waves are also called compressional or compression waves, because they produce compression and rarefaction when traveling through a medium, and pressure waves, because they produce increases and decreases in pressure.
Explanation:
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Gamma radiations do not reach the surface of the Earth
Explanation:
Sun radiates all of these radiations but one of them does not reach the surface of the Earth. Most of the radiation switch reaching the Earth's surface are visible and infrared radiations.
Answer:(a)2631.46 N
(b)1605.51 N
Explanation:
Assuming there is a cable between crate and worker
Given
weight of worker 
Weight of crate 
mass of worker 
mass of crate 
acceleration of system 
Tension in the wire carrying Worker
(b)Tension in the string above
(a) The required magnitude of the electric field when the point charge is an electron is 5.57 x 10⁻¹¹ N/C.
(b) The required magnitude of the electric field when the point charge is an proton is 1.02 x 10⁻⁷ N/C.
<h3>
Magnitude of electric field </h3>
The magnitude of electric field is given by the following equation.
F = qE
But F = mg
mg = qE
E = mg/q
where;
- E is the electric field
- m is mass of the particle
- g is acceleration due to gravity
- q is charge of the particle
<h3>For an electron</h3>
E = (9.11 x 10⁻³¹ x 9.8)/(1.602 x 10⁻¹⁹)
E = 5.57 x 10⁻¹¹ N/C
<h3>For proton</h3>
E = (1.67 x 10⁻²⁷ x 9.8)/(1.602 x 10⁻¹⁹)
E = 1.02 x 10⁻⁷ N/C
Thus, the required vertical electric field is greater when the charge is proton.
Learn more about electric field here: brainly.com/question/14372859
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