Answer:
Yes
Explanation:
The cart will definitely behave differently because more weight is added to it.
In order to successfully push a cart, the applied force must exceed the force of the weight of the cart along with its constituents and the frictional force between the tyres and the floor.
<em>When more weights are added (the 2 packs of water bottles), it means that more force would be needed to overcome the opposing forces to the movement of the cart in order to successfully push the cart again.</em>
Answer: I'm not sure about this one, but you can go to this link to understand it better https://youtu.be/wEQxtUwiV1E.Its a Khan Academy Video Hope This Helps
Explanation:
Answer:
voltage measured by the voltmeter = (E × RV)/(r + RV)
Explanation:
The circuit diagram for this description is presented in the attached image.
The internal resistance of an emf source is modelled to be in series with the source.
Therefore, the end product is a circuit with the battery in series connection with the internal resistance and resistance of the volunteer. The voltage picked up by the volunteer is the voltage across resistor RV.
Total resistance in the circuit = (r + RV) ohms (since both resistors are in parallel)
Current produced by the emf source = E/(Total resistance) = E/(r + RV)
The voltage across resistor RV = current flowing through this resistor × its resistance.
Since all the circuit elements are in series with each other, same current, E/(r + RV) flows through them all
Voltage across RV = voltage measured by the voltmeter = [E/(r + RV)] × RV = (E × RV)/(r + RV) = (E.RV)/(r + RV)
Answer:
The answer is 5102,91 m.
Explanation:
To find<u> escape velocity</u>:
. Therefore:

Using the necessary informations:

as we solve the equation we find 
Answer:
1.242 m/s
Explanation:
Given that
Mass of the bullet, m(b) = 8 kg.
Mass of the pendulum, m(p) = 2.5 kg
Height of the pendulum, h = 6 cm
Initial speed of the bullet, v = ?
Assuming that Energy is conserved, using law of conservation of energy, we have
Potential Energy = Kinetic Energy
mgh = 1/2mv²
1/2mv² = [m(b) + m(p)] gh
1/2 * 8 * v² = (8 + 2.5) * 9.8 * 0.06
4 v² = 10.5 * 0.588
4 v² = 6.174
v² = 6.174 / 4
v² = 1.5435
v = √1.5435
v = 1.242 m/s
Thus, the initial speed of the bullet is 1.242 m/s