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- w = FjAc = F .Aë , W = m(v;)* - m(u,)* , v 1 zm(us)* - m(v,)* , W = Problem 1: (a) à = 3â – 2ŷ, B = 4â& – 5ŷ. à ·B =? Answer: 22 (b) à = -2â + 4ŷ, B = 3âu – lŷ. Ā·B =? Answer: –10 (c) à = 5â – 3ŷ, B = -3â – 5ŷ. ÷B =? Answer: 0 1 | F,dx , W = F. dř , F, dU W = -AU dx d = 4m F = 20 N 0 = 30° m = 4 kg Hk = 0.5) m = 2 kg F = 40 N Hk = 0.2 Ө — 30° Problem 2: In the figure above on the left we have a force F = 20 N pulling a box to the right at an angle 0 = 30° above the horizontal. The box has a mass m = 2 kg, the coefficient of kinetic firction between the box and the ground is uk = 0.2, and the block moves a distance d = 4 m to the right. (a) What is the work done by the force F? Answer: 69.3 J (b) What is the normal force from the ground? Use g = 10 m/sec² Answer: 10 N (c) What is the work done by the kinetic friction force? Answer: -8 J (d) What is Wnet, the net work done on the box? Answer: 61.3 J (e) The box has an initial speed of 4 m/sec. What is the speed of the box after it has…If g(v) is the fuel efficiency, in miles per gallon, of a car going at v miles per hour, what are the units of g′(90)? What is the practical meaning of g′(55)=−0.54?In this problem, I am suppose to manipulate the equation to find what r equals to. Thank you.
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- A0.8 (Homework) For the graph of vx versus t shown, estimate the following: i) What is the slope of the tangent line at t = 0.6 ? ii) What is the slope of the tangent line at t = 1.0 ? iii) What is the slope of the tangent line at t = 1.4 ? 2 -1-The number of viruses (V , measured in trillions or 10¹²) that infect a person is a function of the degree of immunosuppression (I, the fraction of the immune system that is turned off by stress) according to V(I) = 5I². The fever (F, measured in ◦C) associated with an infection is a function of the number of viruses according to F(V) = 37 + 0.4V. Find fever as a function of immunosuppression. How high will the fever be if immunosuppression is complete (I = 1)?The equation for the ideal gas is (P – a/V2) (V-b) = K. Here P is the pressure, V is the volume of the gas. If a and b are constants, what is the the units of a/b.
- Error analysis: The following measurments are taken in a lab in meters. I have linearised the function and the f(l)=log(length). Given that the measuring equipment has a magin of error of +-0.0005m what is the value of all the palce I have written "error" in the table? IE what is the value of deltaf(l)?I need help with this physics problem. The only thing I need to do is fill in the table (so there are no initial numbers etc.) Essentially it’s just arbitrary values for the table.One mole of atoms consists of 6.02 × 1023 individual atoms. If one mole of unicorn atoms were spread uniformly over the surface of a sphere the size of the Earth, approximately how many atoms would be found per square meter? The average radius of the Earth is 6.38 × 103 km. how do I set up this unit conversion?