# Questions Asked onJune 7, 2020

1. ## physics

Consider three point charges arranged along the x axis. Charge q1 = -4.90 nC is located at x= 0.240 m and charge q2 = 2.30 nC is at x= -0.340 m . A positive point charge q3 is located at the origin. -Calculate the value of q3 such that the net force on

2. ## history

What is arable land? territory in the disputed zone between Sudan and Darfur a term for a nationalistic campaign to reclaim a homeland soil that can be plowed and is suitable for crop cultivation a fabled “promised land” that motivated early explorers

3. ## history

What is bioremediation? a technique of settling disputes over land with therapies that include bold imaginings and interpretive dance a procedure by which an attorney can seize contaminated land and transfer ownership to another person a process of

4. ## Physics

1. In moving an object of mass 10 kg through a distance of 8.0 m, 40 J of work is done. The average force exerted is? 2. What is the kinetic energy of a 20 kg object moving at a speed of 10 m/s? 3. the gravitational potential energy of a bird of mass 2.0

5. ## math

Gretta wants to retire in 13 years. At that time she wants to be able to withdraw \$12,500 at the end of each 6 months for 7 years. Assume that money can be deposited at 8% per year compounded semiannually. What exact amount will Gretta need in 13 years?

6. ## physics

Consider the ideal transformer, where i1(t)=20cos(120πt) Amps and v1(t)=100cos(120πt−45∘) volts, and a = 1 and b = 10. What is the rms value of i2 in amps? what is the amplitude of i2 in amps?

7. ## math

Andres Michael bought a new boat. He took out a loan for \$24,010 at 4.5% interest for 4 years. He made a \$4,990 partial payment at 4 months and another partial payment of \$2,660 at 9 months. How much is due at maturity?

8. ## Algebra

If a certain number is added to the numerator and denominator of 5/9, the result is 2/3. Find the number.

9. ## history

Which correctly detail the arguments on both sides of the global warming debate? Select all that apply. Supporters accuse critics of using false claims to gain control. Critics accuse supporters of protecting big business. Supporters demand immediate

10. ## History

In the early to mid 1900s, fascist dictatorships led by Mussolini and Hitler extended their imperial forces throughout Europe and other parts of the world. After World War II, however, power shifted to nations with far different ideologies. How did the

11. ## Precalculus

Find all the solutions of the equation 2sin2xcos-2sinx=0 over the interval -pi/2

12. ## Algebra

A sink is one quarter full when both the faucet and the drain are opened. The faucet alone can fill the sink in 5 minutes, whereas it takes 8 minutes to empty it with the drain. How long will it take to fill the remaining three quarters of the sink?

13. ## Statistics

Let 𝑋1,…,𝑋𝑛 be i.i.d. random variables with distribution (𝜃,𝜃) , for some unknown parameter 𝜃>0 . Find an interval I𝜃 (that depends on 𝜃 ) centered about 𝑋⎯⎯⎯⎯⎯𝑛 such that P(I𝜃

14. ## Statistics

Argue that the proposed estimators 𝜆ˆ and 𝜆˜ below are both consistent and asymptotically normal. Then, give their asymptotic variances 𝑉(𝜆ˆ) and 𝑉(𝜆˜) , and decide if one of them is always bigger than the other. Let

15. ## statistics

The Gamma distribution Gamma(𝛼,𝛽) with paramters 𝛼>0 , and 𝛽>0 is defined by the density 𝑓𝛼,𝛽(𝑥)=𝛽𝛼Γ(𝛼)𝑥𝛼−1𝑒−𝛽𝑥,for all𝑥≥0. The Γ function is defined by

16. ## History

How did the Second Great Awakening contribute to westward expansion? A. Americans wanted to establish Catholic missions throughout the West. B. Americans were forced to leave states on the Atlantic coast because of religious fighting. C. Americans felt

17. ## Physics

A body of mass 4.0 kg moving with a speed of 2.5 m/s collides with a stationary body of mass 0.2 kg. if the two bodies stick together after collision, calculate the magnitude of the velocity with which they move.?

18. ## Chemistry

In copper plating, a current of 0.5A is allowed for a cathode area of 100cm2. If this current is maintained constant for 100mins, calc. the thickness of the copper deposited. [electrochemical equivalent of copper=0.00033gC-1, density of copper=10000gcm-3]

19. ## Maths

What is my best subject

20. ## Science

Given the solubility of calcium hydroxide is 0.0000064 at 25 degree celcius.calculate its solubility at this temperature in I) water II) 0.1M calcium chloride solution

21. ## Physics

1 𝓰 𝓸𝓯 𝓼𝓽𝓮𝓪𝓶 𝓲𝓼 𝓶𝓲𝔁𝓮𝓭 𝔀𝓲𝓽𝓱 1𝓰 𝓸𝓯 𝓲𝓬𝓮, 𝔀𝓱𝓪𝓽 𝓲𝓼 𝓽𝓱𝓮 𝓻𝓮𝓼𝓾𝓵𝓽𝓪𝓷𝓽 𝓽𝓮𝓶𝓹𝓮𝓻𝓪𝓽𝓾𝓻𝓮 𝓸𝓯 𝓽𝓱𝓮

22. ## Maths

Yuzrah's class was given an assignment to solve for the zeroes of a 5th-degree monic polynomial function. Her attention-seeker partner turned off the projector and thus, she was able to write only P(x) = x⁵ + 20x⁴ + 20x³, forgetting the x², x, and

23. ## geometry

The scale factor for two similar rectangles is 3. If the area of the smaller rectangle is 8m^2, what is the area of the larger rectangle? A. 24m^2 B. 192m^2 C. 72m^2 D. 108m^2

24. ## History

What effect did the reconstructing of Germany have? A. Investing in the business sectors led to a significant boost of the German economy. B. Establishing control over the German business sector led to American dominance. C. Creating democratic government

25. ## Math

Cynthia is making a homemade hand lotion. She packages the lotion in cylindrical bottles. She is also making labels for the bottles. Each bottle is 5 in tall and has diameter of 1.5 in. Determine the size of the label needed to cover entire bottle with the

26. ## Mathematics

An aeroplane flies from point A from N 60° E to another point B, a distance if 200km. It then change it point to another town C on a bearing of S 40° E. If C is directly cast of A, Calculate, distance from A to C, distance from B to c, bearing of C from

27. ## Science

Based on Kepler's observations about planetary motion, what is the relationship between a planet's orbital velocity and its distance from the sun?(1 point) The greater the distance, the greater the orbital velocity.*** As distance is cut in half, orbital

28. ## algebra

12.4x + 7.7 = 82.1

29. ## Precalculus

The longest side of a triangle are 13 ft., 15 ft., and 11 ft.. Find the measure of the opposite longest side. Round your answer to the nearest degree. A. 46 degrees B. 58 degrees C. 77 degrees D. 103 degrees

30. ## history

how did congress change the batteries of Washington territory in 1863? 1) Congress expanded the territory to include more land to the east. 2) Congress explained it is the water boundary to include several islands. 3) congress made the 49th panel of the

31. ## algebra

Find a solution to the inequality x > 6. A.4 B.11 C.2 D.6

32. ## algebra

mike and kim invest 36,000 in equipment to print year books for school, each yearbook cost \$15 to print and sells for \$45. How many yearbooks must they sell before business breaks even?

33. ## Physics

An ideal spring of negligible mass is 12.00cm long when nothing is attached to it .when you hang a 3.15kg weight from it , you measure its length to be 13.40cm . If you want to store 10.0J of potential energy in this spring , what would be it's total