Nabil

a 900 N running back moving at 2.0 m/s is stoppped in 0.70 seconds when hit by a lineback. What average foarce did the linebacker exert on the running back? How much did the running back's momentum change?

14 years ago

Rosie (mass 47 kg) pushes a box with a horizontal force of 140 N (31.472 lb) at a speed 15 m/min. What is Rosie's power output?

14 years ago

Archer pulls her bow string back 0.4 m by exerting a force that increases uniformly from zero to 230 N. What is the equivalent spring constant of the bow? This is what I did: F = kx 230 N = k(0.4 m) 575 = K My question is this: Is the answer just 575 or i...

14 years ago

I need to sketch a graph of the gravitational potential energy (y axis) of a block as a function of its kinetic energy (x axis). The block is at the top of an inclined plane. It starts from rest and slides without friction down the length of the incline....

14 years ago

another question: the 20 kg block is at the top of a 10 m long inclined plane. The block starts from rest and slides without friction down the length of the incline. The block is 5 m high. 1) Determine the gravitational potential energy of the block at th...

14 years ago

If three identical resistors are connected in series to a battery, the resistance of the combination will be ___ times the resistance of any one of the resistors.

14 years ago

a wire of 16 inches cut into 2 pieces. Each piece bent into a square. Find the length of the two pieces so the sum of the areas of the two squares in 10 square inches.

14 years ago

two buses leave at the same time. one travels west at 40 mph. the other goes north at 30 mph. When will they be 400 miles apart?

14 years ago

for every point (x,y) which is in the first quadrant and is on the graph y = 24 -4x^2, consider the rectangle with corners (-x,0), (-x, y), (x,0) and (x,y). for which value of x does the rectangle have maximal area?

14 years ago

Company makes tire rims. Estimates the the profit, P, of selling x tire rims is given by: P= -0.01x^2 + 8x + 1500 Plugging in 1000 for P and solving, I get 400. Is that correct? b) find the number of rims that must be sold to maximize profit. plugging in...

14 years ago

fidn all solutions to x^4 + 3x^2 = 4x^3 + 1

14 years ago

Make a box with a square base using only 250 square feet of material. what dimensions for the box will produce a maximum valume? what is the maximym volume?

14 years ago

Video game company hires gamers to test a new adventure game. The number of levels completed by an average gamer is given by L = 60/(3+17e^-0.1t) where L is the number of levels completed after t hours of playing. a) How many levels is a gamer expected to...

13 years ago

Chemist has 30 kg of mixture that is 1/7 lead and 6/7 copper. How many kg of lead must be added so resulting mixture is 2/9 lead.

13 years ago

a wheel with a diameter of 12 inches is spinning at 10 revolutions per mnute. In one minute, a point on the edge of the circle would have traveled a distance of ???

13 years ago

A car is traveling at a constant speed along road ABCDE. (Curve BC where Bis beginning of curve and C is the end of the curve is in the shape of a "backward C." C is then the beginning of another curve and D is the end of the same curve in the shape of a...

13 years ago

A 12 food wide fertilizer spreader drops 45 pounds of fertilizer while traveling 625 feet. What is the fertilizer application rate in pounds/acre?

13 years ago

A drainage system for a 40 acre field is designed to remove 3/8 inch of standing water from the entire field in 24 hours. What flow rate (gpm) must the drainage system achieve to meet the design specification?

13 years ago

Express each of the following as a single logarithmic expression. All exponents must be left in radical form: 1.) 2logx-3logy 2.) logx-logy+logz 3.) 1/3log5x+2/3log6x 4.) 2/3(logbase2 x - logbase2 y) I don't understand these problems at all. Can someone p...

13 years ago

The horizontal distance between the town of Sko (elevation 40 m) and a hut (elevation 943 m),a resting place for hikers, is 6.68 miles. If a hiker traveled in a straight line from Sko to the hut, the average include would be ___ percent.

12 years ago

Planning a wedding in 6 years. Estimated cost $55,000 How much do you have to deposit today in one lump sum to fully pay for it if you earn 7.5% per year on investment?

11 years ago

Car loan interest rate is 7% loan payment $600 month 36 months left on loan If pay an addition $1000 with next regular $600 payment (due in a month), how much will it reduce the amount of time left to pay off the loan?

11 years ago

Ranch home is 2100 sq ft (70 x 30) Assume the climate yields 30in of rainfall per year. Baths, showers, faucets use 40% of this water, of which 80% is recycled to the indoor garden (50 ft x 20 ft) How much water in INCHES will the 50ft x 20 ft indoor gard...

11 years ago

A single die was rolled 100 times the results are recorded in the table below what is the experimental probability of rolling a 3

4 years ago

Sorry. Yes, the inclined plane is 5 m high. so will the PE and KE formulas work?

14 years ago

answer is supposed to be x = 6.45. h = [125 - 6.45^2] / 2(6.45) = 6.4649 I don't see where this is from.

14 years ago

After 10 years and the question : When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction fringe that is 9.2 cm wide on a screen that is 2.55 m away. How wide is the slit? Lmao still the same wording tho i dont unde...

3 years ago

oh now i get it thanks elena

3 years ago