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What constant speed must the second swimmer have in order to catch up to the leader at the end of the pool?
The launch speed of B is twice that of C. Neglecting air resistance, find the ratio of the maximum height of B to that of C and the ratio of the range of B to that of C.
A suitcase drops out of the luggage compartment. How far from the dog will the suitcase land? You can ignore air resistance.
A shopper pushes a cart 49 m south down one aisle and then turns 90.0° west. What is the largest possible displacement of the shopper? m ° counterclockwise from west
How much work must Denise do to drag her basket of laundry of mass 5 kg a distance of 3 m along a floor, if the force she exerts is 20 N at an angle of 60.0 with the horizontal?
Suppose you want to make a scale model of a hydrogen atom. For the nucleus you choose a small ball bearing. What would be the radius (mm) of the sphere representing the earth?
A rifle bullet with a muzzle speed of 300m/s is fired directly into a special dense material that stops the bullet in 28.0cm . Assuming the bullet's deceleration to be constant, what is its magnitude?
What is the free energy cost for exposing a hydrophobic molecule per area? Answer this in units of kBT/nm2. (d) Using your results in (a) or (b), explain why oil and water do not mix (at room temper
Calculate the total mass of hydrogen available for fusion over the lifetime of the Sunb. The Sun radiates 4 × 1026 joules per second (= watts). How much of the Sun's hydrogen (in kg) is conver
Please provide detailed definitions along with examples wherever applicable. Do justify each of the headers with explanation and description that is comprehensive and complete.
You drop the rock into the cave and measure the time that passes until you hear the rock hitting the floor of the cave far below. If the elapsed time is 9.4 s, how deep is the cave?
Janet wants to find the spring constant of a given spring, so she hangs the spring vertically and attaches a 0.46 kg mass to the spring's other end. If the spring stretches 4.0 cm from its equilibr
Find the electric flux through the plane surface shown in the figure below if θ = 55.8°, E = 369 N/C, and d = 4.50 cm. The electric field is uniform over the entire area of the surface.
Discuss the Biomechanics of a Golf Swing and how to prevent injury in an essay
Two cylindrical metal wires, A and B, are made of the same material and have the same mass. Wire A is twice as long as wire B. What's the ratio RA/RB?
Find the frictional force (magnitude and direction) on the crate if the crate is sliding up the ramp. what is the magnitude N?
An estimate for the number of cells in a human body is 50 million million (yes, that is two millions in a row). What percentage of your body mass does one average cell constitute? Express your answ
If the soldier and its pedestal is initially at standard temporature (0 degrees celsius) calculate the mass of the aliminium pedestal, if the final temporature is 15 degrees celsius?
At the end of a factory production line, boxes start from rest and slide down a 30° ramp 5.6m long. If the slide is to take no more than 4.3s , what's the maximum allowed frictional coefficient?
Determine two different possible ways for a player to make a free throw in basketball. In both cases give the initial speed, initial angle, and initial height of the basketball.
The drawbridge then starts to rise. The dancer continues to stand on one leg. The drawbridge stops just at the point where the dancer is on the verge of slipping. What is the magnitude f of the fri
A constant horizontal force Fa pushes a 3.20 kg FedEx package across a frictionless floor on which an xy coordinate system has been drawn. The figure below gives the package's x and y velocity compo
100 grams of water is mix to 150 grams of alcohol.The density of alcohol is equal to 790 kg meter. Calculate the specific gravity of total mixture.
A sledge loaded with bricks has a total mass of 17.3 kg and is pulled at constant speed by a rope inclined at 20.° How much work is done by the rope on the sledge?
Neglecting air resistance (on Earth) and variations in the acceleration of gravity with height, how long does it take the projectile on the Moon to reach its maximum height?