b. tornadoes
c. hurricanes
d. thunderstorms
Answer:
A
Explanation:
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The earth behaves as a magnetic dipole. Therefore a freely suspended magnet always points towards in the north-south direction because the north pole of the suspended magnet attracts the south pole of the earth's magnet which is the geographical north pole of the earth.
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Answer:
Because the north pole of a compass needle points towards geographical N and S poles and the compass needle points towards georaphical south.
Explanation:
Earth is a huge magnet.
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B. hydrogen nucleus
C. high energy electron
D. radium nucleus
An alpha particle is identical to a helium nucleus as it consists of two protons and two neutrons, which match the composition of a helium atom’s nucleus.
An alpha particle is identical to a helium nucleus. This is because an alpha particle contains two protons and two neutrons, which is the same as the nucleus of a helium atom. The alpha particle does not have electrons that surround the nucleus in a helium atom.
Options B, C, and D are not correct. A hydrogen nucleus (B) has only one proton and no neutrons, a high energy electron (C) is a subatomic particle with charge -1 and not part of a helium nucleus, and a radium nucleus (D) contains many more protons and neutrons than a helium nucleus or an alpha particle.
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Answer: tyre made out of rubber, tread pattern on wheels
Explanation:
the material of rubber generally grips better than other materials whilst still allows the car to move smoothly
tread patterns are essential on all tires as it increases the traction between the wheels and the road which increases the friction
Answer:
New volume (V2) = 60 liter
Explanation:
Given:
Amount of helium (V1) = 20 Liter
Temperature (T1) = 100°K
Temperature (T2) = 300°K
Find:
New volume (V2)
Computation:
According to Gas Law:
V1 / T1 = V2 / T2
20 / 100°K = V2 / 300°K
V2 = 60 liter
New volume (V2) = 60 liter
Answer:
Frequency = 3.0 Hertz
Explanation:
Given the following data;
Period = 0.333 seconds
To find the frequency;
Mathematically, frequency of a wave is given by the formula;
Frequency = 1/period
Substituting into the formula, we have;
Frequency = 1/0.333
Frequency = 3.0 Hertz