Answers created by Dang Thi ThanhHoa
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You kick a ball with a speed of 4 m/s at an angle of 10°. How far away does the ball land?

What is the final temperature after 840 J is absorbed by 10.0 g of water at 25°C?

A #0.5kg# rubber ball is thrown straight up into the air. At a height of #20m# above the ground, it is travelling at #15m/s#. How do you answer the following questions?

How do you find the midpoint of A (3,2) and B (5,2)?

Two charges of # 4 C # and # 2 C# are positioned on a line at points # 1 # and # 14 #, respectively. What is the net force on a charge of # 2 C# at # 1 #?

An object travels North at # 5 m/s# for #3 s# and then travels South at # 1 m/s# for # 4 s#. What are the object's average speed and velocity?

An object is at rest at #(3 ,8 ,8 )# and constantly accelerates at a rate of #7/5 m/s^2# as it moves to point B. If point B is at #(2 ,9 ,5 )#, how long will it take for the object to reach point B? Assume that all coordinates are in meters.

A container with a volume of #12 L# contains a gas with a temperature of #150^o C#. If the temperature of the gas changes to #620 ^o K# without any change in pressure, what must the container's new volume be?

A charge of #36 C# passes through a circuit every #6 s#. If the circuit can generate #9 W# of power, what is the circuit's resistance?

How do you find the local max and min for #f(x)=sinxcosx#?

Some very hot rocks have a temperature of #340 ^o C# and a specific heat of #160 J/(Kg*K)#. The rocks are bathed in #72 L# of boiling water. If the heat of the rocks completely vaporizes the water, what is the minimum combined mass of the rocks?

How do you solve #2/3(12x)>4#?

The kinetic energy of an object with a mass of #3 kg# constantly changes from #60 J# to #270 J# over #8 s#. What is the impulse on the object at #5 s#?

The gas inside of a container exerts #26 Pa# of pressure and is at a temperature of #220 ^o K#. If the pressure in the container changes to #54 Pa# with no change in the container's volume, what is the new temperature of the gas?

An object with a mass of #8 kg# is revolving around a point at a distance of #1 m#. If the object is making revolutions at a frequency of #12 Hz#, what is the centripetal force acting on the object?

An object with a mass of #7 kg# is on a ramp at an incline of #pi/12 #. If the object is being pushed up the ramp with a force of # 4 N#, what is the minimum coefficient of static friction needed for the object to remain put?

How do you divide # (12i)/(13i) # in trigonometric form?