# Rayan

Most popular questions and responses by Rayan
1. ## physical

an airplane takes off at an angle of 30 to the horizontal. if the component of its velocity along the horizontal is 250 km/h , what is its actual velocity? also find the vertical component.

2. ## Physics

an empty rd bottle weighs 60 grams but weighs 120 gram when completely filled with water when the bottle is completely with an unknown liquid it weighs 90 gram what will be the volume of the rd bottle

3. ## Physics

What is the mass of the meterstick shown in the figure (Hint: 25% of the meterstick’s mass is to the left of the fulcrum and 75% is to the right)?

4. ## Physics

A police car stopped at a set of lights has a speeder pass it at 100 km/h. If the police car can accelerate at 3.6 m/s^2, how long does it take to catch the speeder?

5. ## Physics

You are traveling on an airplane. The velocity of the plane with respect to the air is 140 m/s due east. The velocity of the air with respect to the ground is 34 m/s at an angle of 30° west of due north. 1)What is the speed of the plane with respect to

6. ## physics

A white billiard ball with mass mw = 0.1 kg is moving with a speed of v = 0.5 m/s making angle 60 degree and collides with a black billiard ball with the same mass mb = 0.1 kg that is initially at rest. The distance between the black ball and the pocket is

7. ## chemistry

how to determine the oxalate and copper in K[Cu(C2O4)2].2H2O

8. ## biology 2

The digestive, circulatory, respiratory, immune, and excretory systems all work together to maintain homeostasis. Discuss how a minor malfunction in one of these systems could lead to major malfunctions in others. If methods were developed to improve the

9. ## Physics 11

A businesswoman is applying a force of 12.0 N [upwards] to carry her briefcase for a horizontal distance of 200.0 m. How much work is she doing on the briefcase?

11. ## AP Calculus AB

lim |x-3|/x-3 x-->3^- A) 0 B) -1 C) 1

12. ## Chemistry

Consider the reaction below : P4(s) + 5O2(g) P4O10(s) How many grams of phosphorus react with 1.195 x 102 L of oxygen (O2) at STP (standard temperature and pressure) to form tetraphosphorus decaoxide?

13. ## AP Calculus AB

Suppose f(x)= x^5 - 10 and let h(x) be the inverse of f. Find h'(22).

14. ## Math

How to make "freyer model" of 437?

15. ## algebra

Sort these numbers describe your sort rule 5, 10, 16, 19, 24, 37, 40

Sort these numbers describe your sort rule 5, 10, 16, 19, 24, 37, 40

17. ## AP Calculus

Find x. lim (sin(x))^x x-->0

18. ## Pre-Calculus 12

Solve using logarithm: 2^(4x+1)=3^x

19. ## Chemistry

which compound shows small change in solubility from 0°C to 100°C?

20. ## Pre-Calculus 11

What is the entire radial form of -3* cube root of 2? I go cube root of 54 as my answer but it is wrong

21. ## Math:Algebra

Maya has 2 times as many apples as Ally if Ally has 87 apples how many apples dose Maya have now? Maya's sister takes some away. Write an algebraic expression that represents the amount of apples they have now?

23. ## Math

Please show me how to factor X^3 + 125

24. ## maths

find out 10 pairs of one digit numbers whose product end with the digit 0?

1. ## english

Verb is: is, must, learn, make

posted on May 12, 2019
2. ## physics

average speed = (3+0)/2 = 1.5 m/s so t = 8/1.5 = 80/15 = 5.33 seconds sliding to a stop then acceleration a = (0-3)/5.33 = -.5625 m/s^2 so now the physics F = m a -m g (mu) = m (-.5625) mu = .5625/9.81 = .0573

posted on February 14, 2018
3. ## AP Calculus 12

Yes that was the question. Sorry I messed up the structure. Thanks for your help!

posted on December 20, 2017
4. ## Pre-Calculus 12

Thank you!

posted on December 8, 2017
5. ## riddle

Clothes this because when it is dirty is old but when it is has been wash it's become new

posted on April 13, 2017
6. ## Math

oops!

posted on April 3, 2017
7. ## Math

posted on April 3, 2017
8. ## Physics 11

Thanks!

posted on April 3, 2017
9. ## Physics

why are you multiplying by 1/2

posted on February 4, 2017
10. ## Physics

Why do you multiply by 1/2?

posted on February 4, 2017
11. ## Pre-Calculus 11

I have one more question I tried this question but got the wrong answer... 3-x= √x^2-5 (The square root is over whole x^2-5) My answer was x=2/3

posted on July 10, 2016
12. ## Pre-Calculus 11

isn't negative not supposed to go inside the cube root

posted on July 10, 2016
13. ## math

304

posted on October 24, 2015
14. ## Math:Algebra

(2*87) -l

posted on November 16, 2014