# Posts by mariya

Total # Posts: 29

**PHYSICS**

a shell of mass M moving with velocity v breaks into two fragments. one of the mass comes to rest. velocity of the second fragment is

**Math**

Jamil spends 1/3 of his pocket money on sweets. He saves 1/9 of his pocket money. What fraction of his pocket money is left?

**Help with Psychology**

One student conducts a study on the relationship between people’s level of extroversion and the number of close friends they have. He computes Pearson’s r, which comes out to be – 1.70. Which of the following is most clearly true? A. The relationship between the...

**What study would be the best? Help with Psychology**

What is the best kind of study to conduct when wanting to show that Variable X has a direct effect on Variable Y? The answer choices I am given are experiment, survey, observational study, non experimental study. I think the right choice would be an experiment. Please correct ...

**physics**

A body of mass 4 kg is dropped from a height of 20m .calculate the initial momentum and the momentum just before it strikes the ground (g=10m/s*s)

**science**

In the space is there any aliens?

**poetry part 2**

14. The theme of Sandburg's poem "Grass" is A. freedom. B. forgetfulness. C. peace. D. war. . I read the poem and put war since it was most logical but its not the right answer. i know its either B or C but im not sure and i need to get this right. Can someeone ...

**solid chemestry**

1.37

**education**

What do we called the scholarship which you can keep(like they don't ask you how you going to use it?)

**Physics**

How much ice at 0 degrees celsius can be melted with 1kg of steam at 100 degrees celsius, assuming no loss of energy to the surroundings? Use specific latent heat values. The specific heat of water is 4200 J kg-1 K-1

**Physics**

in the moments before you hit a truck, you decide to calculate the impulsive force (impulse) you will feel. you and your bike have a combined mass of 120kg and the truck brings you to a halt in 0.3s. What is your impulse?

**Physics**

When catching a ball, your cricket coach advises you to move your hands backwards with the ball. Explain the physics behind this 'follow through' technique.

**physics**

thank you :)

**physics**

Jenny is riding on a bus. She has been unable to find a seat and so she is standing in the aisle. Explain, in physics laws and principles, why it is important that she hold onto something while she is completing her journey.

**Physics - URGENT**

thanks :)

**Physics - URGENT**

A car is speeding at constant velocity of 30ms-1 in an 80kmh-1 zone as it passes a stationary police motorcycle hiding. The motorcycle starts to accelerate at 5ms-2 at the same instant the car passes it and continues for 8 seconds. It then stops accelerating and maintains its ...

**Physics - URGENT**

A car is speeding at constant velocity of 30ms-1 in an 80kmh-1 zone as it passes a stationary police motorcycle hiding. The motorcycle starts to accelerate at 5ms-2 at the same instant the car passes it and continues for 8 seconds. It then stops accelerating and maintains its ...

**Physics**

thanks. the answers to b. is 167m and the answer to d. is 93.7 m. but I'm not sure how to get that. would you please care to explain how to get that?

**Physics**

A boat sets off perpendicular to the bank, to cross a river width of 250m. The speed of the boat in still water is 3.20ms-1, however there is a current downstream at 1.20ms-1, which puss the boat sideways. a) Find the resultant velocity of the boat. b) Find the total distance ...

**Bachelor in Science**

If I takeB achelor in Science How many years it will take and what field it relates to?

**geometry**

triangle xyz not shown is smiliar to triangle abc shown above if one side of triangle xyz is 10 inches long, which of the following could be the length in inches of another side of triangle xyz?

**maths**

in a sequence the 50th term is 349 51st term is 354 and the 52nd term is 359 what is the first and the 100th term

**english**

What happens to a seed after you put it in the soil?think of few verbs to describe the different things that happen to a seed .

**trigonometry**

thanks we have a table but we have to fill it out ourselves and i wasn't sure how to do it.

**trigonometry**

how do you find sin theta and cosine theta of angles? ex. Find the sine theta and cosine theta of 150 degrees as well as the degrees in radians?

**alg 2**

2 questions: 1. Find "a" if (-3,7) is a solution of 2x+ay=26 2. solve system using substitution, linear combination, and graphing: 3x-2y=3 5x+4y=16

**Algebra 2**

sorry =3 is -3

**Algebra 2**

2 questions: 1. Find "a" if (=3,7) is a solution of 2x+ay=26 2. solve system using substitution, linear combination, and graphing: 3x-2y=3 5x+4y=16

**Algebra 2**

I am creating a project for math in which I have to draw an object using: parabolas, hyperbolas, circles,etc. We use conic section equations to identify where they are on the graph. I have confusion about writing the equation of parabolas. I know the equation is 4px=y^2 but I ...

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