Search & Filtering
A mass of 12 kg is pulled along a horizontal surface by a rope which makes a 15 degree below horizontal as in fig below. The tension in the rope is 80 N. The coefficient of kinetic friction µk between the surface and the mass is 0.38.
5. Draw a free body diagram and include all relevant forces.
6. Find the acceleration of the mass.
1. Show ALL equations, then substitution of numerical values with units.
2. If you have a string of numbers with no preceding equation, sketch, or explanation, you will receive NO CREDIT even if it leads to the correct answer.
3. Make sure all symbols used are clearly identified on your sketch. BOX each required answer. Show work in a Logical Order – Don’t jump around.
A rock is thrown with an initial speed of 30 m/s at an angle of 600 above the horizontal. Neglect air resistance.
3. Find the velocity of the rock two seconds later after it was thrown?
4. Find the displacement of the rock two seconds later from the position it was thrown?
1. Show ALL equations, then substitution of numerical values with units.
2. If you have a string of numbers with no preceding equation, sketch, or explanation, you will receive NO CREDIT even if it leads to the correct answer.
3. Make sure all symbols used are clearly identified on your sketch. BOX each required answer. Show work in a Logical Order – Don’t jump around.
At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 3.2 m/s2 . At the same instant a truck, traveling with a constant speed of 20 m/s overtakes and passes the car at the same intersection. The car eventually overtakes the truck. Draw a motion diagram for both the car and the truck.
1. How far beyond its starting point does the car overtake the truck?
2. How fast is the car traveling when it overtakes the truck?
1. Show ALL equations, then substitution of numerical values with units.
2. If you have a string of numbers with no preceding equation, sketch, or explanation, you will receive NO CREDIT even if it leads to the correct answer.
3. Make sure all symbols used are clearly identified on your sketch. BOX each required answer. Show work in a Logical Order – Don’t jump around.
The linear thermal expansion is related to what
a. The force exerted on the tractor by the tow bar when acceleration is 3ms^-2
b. The force exerted when did tractor and the trailer are moving on a constant speed of 4ms^-1
Determine the force of 2 free electron 1.0A° a point in Vacuum
An aluminum container whose mass is 205 g contains 300 g of water at 20C. In this container is then placed 250 g of iron at 150C and 20 g of ice at −10C. Find the final temperature of the mixture. The specific heat of aluminum and iron is 0.21 cal/g C and 0.11 cal/g C, respectively. The specific heat of ice is 0.50 cal/g C while its heat of fusion is 80 cal/g
#340153 on Dec 2023