A “Y”-shaped tube is inserted upside down so that the left
foot and right foot are immersed in two kinds of liquid.
After both feet are immersed in the liquid, then the top of
the Y pipe is closed with the finger and pulled upwards,
so that the two legs of the Y pipe are filled with a column
of different high-density liquids. If the density of the first
liquid is 0.80 gram.cm-3 and the second density is 0.75
gram.cm-3, if the first liquid column has a high of 8 cm,
then determine the height difference between the two
liquid columns on U pipe.
A steel cable holds a 200 kg shark tank 3 meters below
the surface of saltwater. If the volume of water displaced
by the shark tank is 0.1 m^3, what is the tension in the
cable? Assume the density of saltwater is 1025 kg/m^3
You have a block of a mystery material, with a length (l)
of m long, 0.11 m wide and 0.25 m thick. Its mass is 1155 grams.
a) What is its density?
b) Will it float in a tank of water, or sink? what
percentage of it is sticking out of the water?
given value: 0.38
A ball of mass 0.05 kg and diameter 1.05 metre is held fully
underwater (density 1000 kg/m3.) Calculate
a. the up thrust on the ball
b. the density of the ball
c. the percentage of the ball above the surface of the
water if it is allowed to float
This program will calculate the discount given to customers at a pet store. There are three types of loyalty memberships: Gold members receive a 20% discount, Silver members receive a 15% discount, and Classic members receive a 10% discount, for all services. Customers who do not have a membership will not receive a discount. All members will receive a 10% discount on products purchased. There will be three classes in this program: customer, discount, and customervisit. It shall compute the total bill if the customer avails a number of services and purchases a number of products during a visit. Create a testdriver to test all the classes as well as complete/supply the code under getTotalCost to compute the final payment.
Jo Ann and her lab partner are completing a free fall lab in physics. Her partner drops the ball in front of the motion sensor to measure its speed. Assuming acceleration is constant and air resistance is negligible, how far does the object fall if it reaches a speed of 9.8 m/s?
An aeroplane heads due north at 500 km/h. It experiences a 80 km/h crosswind flowing in
the direction N60^°E.
(b) Determine the speed of the aeroplane. (Leave your answer in terms of square root) (3)
An aeroplane heads due north at 500 km/h. It experiences a 80 km/h crosswind flowing in
the direction N60^°E.
(a) Find the true velocity of the aeroplane.
7. A ball is thrown vertically upward with a speed of 7.1 m/s. Find:
(9 points)
a. Maximum height reached the ball
b. Its time of flight
c. Velocity the ball would return to its starting point
5. A cart is at x = 5.25m and time t = 0. The cart accelerates at
4.15m/s^2. If The speed of the cart at t=0 is 3m/s, find the position
of the cart at t =2s and also determine where the cart is when it
reaches a speed of 5m/s. (3 points)
6. A stone is thrown vertically up with an initial velocity of 4.9m/s from
the top of the building that is 64m high. On its way down, it misses
the top of the building and goes straight to the ground. Find:
(9 points)
a. Its maximum height relative to the ground
b. Its time of flight or the total time it is in air, and
c. Its velocity just before it reaches the ground.