Answer:
4748.4
Explanation:
The first number after the decimal is the tenths place and when it says round it means look at the number after it and if it's above four then raise the tenths place by one.
Is a circuit with both a resistor (R) and a capacitor (C). RC circuits are frequent element in electronic devices. They also play an important role in the transmission of electrical signals in nerve cells.
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This is a concrete example of the Doppler effect. This effect is the change of frequency experienced by the listener or the observer with respect to their relative distance to the source of the sound. There can be two equations to be applied: to the approaching source, and to the receding source.
Approaching source:
frequency observed = [v/(v-v,source)]*frequency of source, where v is the velocity of sound . Substituting,
1000 = [340/(340-v,source)]*frequency of source <---- equation 1
Receding source:
frequency observed = [v/(v+v,source)]*frequency of source, where v is the velocity of sound . Substituting,
800 = [340/(340+v,source)]*frequency of source <---- equation 2
Rearranging equation 1: [1000(340-v,source)]/340 = frequency of source
Equation 2: 800 = [340/(340+v,source)]*frequency of source
Substituting equation 1 to equation 2:
800 = [340/(340+v,source)]*[1000(340-v,source)]/340
Solving using the scientific calculator under shift-solve feature,
v,source = 37.78 m/s
Therefore, the train is moving at 37.78 m/s.
Answer:
The car exerts the same sized force on the bug as the bug exerts on the car.
Explanation:
Given that
Speed of car = 70 mph
Third law of Newton's
It state that when an object A apply force on the another object B then object B also apply the same force on the object A but in opposite direction .This is known as action reaction .In simple words every action and reaction.
By using the third law of concept,when car and a bug collides then car exerts the same sized force on the bug as the bug exerts on the car.