Physics, 02.09.2020 21:01 Kaitneedshelps
When the boat stops, the driver throws an anchor overboard. The anchor becomes fixed on the
bottom of the river and is attached to the boat with a rope. Assuming the boat holds its position, it
can be determined that the force of the anchor rope is
A
greater than the force of the water's current.
B
equal to the force of the water's current.
С
greater than the force of gravity
D
less than the force of gravity
Answers: 3
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If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?
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Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
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Physics, 22.06.2019 16:50
During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.
Answers: 2
Physics, 22.06.2019 16:50
Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.
Answers: 3
When the boat stops, the driver throws an anchor overboard. The anchor becomes fixed on the
bottom...
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