Answer:
Explanation:
The density of an object is given by
where
m is the mass of the object
V is its volume
In this problem,
m = 42 kg
V = 22 m^3
Substituting into the equation, we find the object's density:
______ resources include biodiversity, energy, land and soil, and water resources.
2 answers:
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Answer:
Energy is transformed from potential to kinetic and vice versa
Explanation:
The energy is transformed from mechanical to kinetic energy when the object changes its position with respect to a reference point, where it loses height but increases its speed. When the object is at maximum height with respect to a reference point, it will have its maximum potential energy value. When the object passes through the reference point it will have potential energy equal to zero, but this energy will become kinetic energy.
The most characteristic and real example is that of a pendulum at one end, as can be seen in the attached image.
When the pendulum is located at the top end, as shown in Figure 1, at that point the maximum potential energy will be held. Then the pendulum is released and when it passes through the reference point and its height is zero, with respect to that point, all potential energy will have become kinetic energy in the same way at this point the maximum speed of the pendulum will be set.
Force is the influence that is capable of bringing about motion
The correct options are;
1. C. The pull of the engine, friction force
2. A. Weight, push of the tracks against the wheel
3. D. The astronaut weighs the most on Earth and least on the Moon
4. Please see attached drawing for example
5. Please see attached drawing for example
6. The data points will fall along a line this that as the force increases, the acceleration increases
Reason:
1. The horizontal forces are the forces acting along the horizontal x-axis, therefore;
A train engine pulling a boxcar what horizontal forces are;
C. The pull of the engine, friction force
2. The vertical forces are the forces acting an the direction of the y-axis of a graph
The vertical forces present when a train pulls a boxcar are;
A. Weight, push of the tracks against the wheel
3. The weight of an astronaut, W = mass × Gravity
- Therefore, the weight increases with increasing acceleration due to gravity
Therefore, the least weight is on the moon, where acceleration due to gravity is 1.6 m/s², and most on Earth where the acceleration due to gravity is approximately 9.81 m/s²
- The correct option is D. The astronaut weighs the most on Earth and least on the Moon
4. The magnitude of the downward force is the sum of the vertical forces acting downwards
5. The net force is given by the vector sum of the forces
6. According to Newton's second law, Force, F = Mass, m × Acceleration, a
- Therefore, where the students conduct the experiments rightly, we have that the data points will fall along a line this that as the force increases, the acceleration increases
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Answer:
If R₂=25.78 ohm, then R₁=10.58 ohm
If R₂=10.57 then R₁=25.79 ohm
Explanation:
R₁ = Resistance of first resistor
R₂ = Resistance of second resistor
V = Voltage of battery = 12 V
I = Current = 0.33 A (series)
I = Current = 1.6 A (parallel)
In series
In parallel
Solving the above quadratic equation
∴ If R₂=25.78 ohm, then R₁=10.58 ohm
If R₂=10.57 then R₁=25.79 ohm