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mylen [45]
3 years ago
10

A force of 300 N is used to stretch a horizontal spring with a 0.5 kg block attached to it by 0.5 m. The block is released from

rest and undergoes simple harmonic motion. Calculate spring constant, mechanical force applied and velocity when x=15 cm.
Physics
1 answer:
morpeh [17]3 years ago
6 0

Answer:

0.7000cm

Explanation:

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A runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of
34kurt

Answer:

The centripetal acceleration of the runner is 1.73\ m/s^2.

Explanation:

Given that,

A runner completes the 200 m dash in 24.0 s and runs at constant speed throughout the race. We need to find the centripetal acceleration as he runs the curved portion of the track. We know that the centripetal acceleration is given by :

a=\dfrac{v^2}{r}

v is the velocity of runner

v=\dfrac{200\ m}{24\ s}\\\\v=8.34\ m/s

Centripetal acceleration,

a=\dfrac{(8.34)^2}{40}\\\\a=1.73\ m/s^2

So, the centripetal acceleration of the runner is 1.73\ m/s^2. Hence, this is the required solution.

5 0
3 years ago
Can someone tell me how this circuit works?
ch4aika [34]

Answer:

In the scientific model, electric current is the overall movement of charged particles in one direction. The cause of this movement is an energy source like a battery, which pushes the charged particles. The charged particles can move only when there is a complete conducting pathway (called a ‘circuit’ or ‘loop’) from one terminal of the battery to the other.

A simple electric circuit can consist of a battery (or other energy source), a light bulb (or other device that uses energy), and conducting wires that connect the two terminals of the battery to the two ends of the light bulb. In the scientific model for this kind of simple circuit, the moving charged particles, which are already present in the wires and in the light bulb filament, are electrons.

Electrons are negatively charged. The battery pushes the electrons in the circuit away from its negative terminal and pulls them towards the positive terminal (see the focus idea Electrostatics – a non contact force). Any individual electron only moves a short distance. (These ideas are further elaborated in the focus idea Making sense of voltage). While the actual direction of the electron movement is from the negative to the positive terminals of the battery, for historical reasons it is usual to describe the direction of the current as being from the positive to the negative terminal (the so-called ‘conventional current’).

The energy of a battery is stored as chemical energy (see the focus idea Energy transformations). When it is connected to a complete circuit, electrons move and energy is transferred from the battery to the components of the circuit. Most energy is transferred to the light globe (or other energy user) where it is transformed to heat and light or some other form of energy (such as sound in iPods). A very small amount is transformed into heat in the connecting wires.

The voltage of a battery tells us how much energy it provides to the circuit components. It also tells us something about how hard a battery pushes the electrons in a circuit: the greater the voltage, the greater is the push (see the focus idea Using energy).

Explanation:

6 0
2 years ago
"A circuit consists of a battery and two resistors connected in parallel. If the resistance in both resistors is doubled, and th
sveticcg [70]
Let's call R the value of the resistance of the two resistors. In the first situation, the resistors are connected in parallel, so their equivalent resistance is given by:
\frac{1}{R_{eq}}=\frac{1}{R}+\frac{1}{R}=\frac{2}{R}
which means:
R_{eq}=\frac{R}{2}
And calling I the current in the circuit, the voltage is given by Ohm's law:
V=IR_{eq}=\frac{IR}{2}

In the second situation, the resistance of each resistor is doubled: R'=2R. So, the equivalent resistance in this case is given by
\frac{1}{R_{eq}}=\frac{1}{2R}+\frac{1}{2R}=\frac{2}{2R}=\frac{1}{R}
which means
R_{eq}=R
And the new voltage is given by:
V'=IR_{eq}=IR=2V
<span>which is twice the original voltage, so the voltage has doubled.

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</span>
7 0
3 years ago
Read 2 more answers
What are tides?
3241004551 [841]

Answer:

4th

Explanation:

Rise and fall of the water level on the sea shore

4 0
3 years ago
Read 2 more answers
Blonde hair is produced by inheriting double recessive alleles (bb) from one’s parents. What is the probability of their offspri
dangina [55]

Answer:

25%

Explanation:

4 0
2 years ago
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