Яндекс.Метрика Яндекс.Метрика Яндекс.Метрика

Thursday, May 7, 2015

A Ball is Thrown...

1. A ball is thrown downward from a 40 m high building with a speed of 10 m/s. What is the vertical component of the velocity when it hits the ground? (Use gravity g = 10 m/s²)

2. A ball is thrown downward from a 40 m high building with a speed of 10 m/s. What is the horizontal component of the velocity when it hits the ground? (Use gravity g = 10 m/s²)

3. A ball is thrown downward from a 40 m high building with a speed of 10 m/s. What is the speed of the ball when it hits the ground? (Use gravity g = 10 m/s²)

4. A ball is thrown upward from a 40 m high building with a speed of 10 m/s. What is the vertical component of the velocity when it hits the ground? (Use gravity g = 10 m/s²)

5. A ball is thrown upward from a 40 m high building with a speed of 10 m/s. What is the horizontal component of the velocity when it hits the ground? (Use gravity g = 10 m/s²)

6. A ball is thrown upward from a 40 m high building with a speed of 10 m/s. What is the speed of the ball when it hits the ground? (Use gravity g = 10 m/s²)

7. A ball is thrown horizontally from a 45 m high building with a speed of 10 m/s. What is the horizontal component of the velocity when it hits the ground? (Use gravity g = 10 m/s²)

8. A ball is thrown horizontally from a 45 m high building with a speed of 10 m/s. What is the vertical component of the velocity when it hits the ground? (Use gravity g = 10 m/s²)

9. A ball is thrown horizontally from a 45 m high building with a speed of 40 m/s. What is the speed of the ball when it hits the ground? (Use gravity g = 10 m/s²)

10. A ball is thrown horizontally from a 45 m high building with a speed of 10 m/s. This building located on an aliens' planet with the gravity acceleration of 20 m/s². What is the horizontal component of the ball velocity when the ball hits the ground?

11. A ball is thrown downward from a window of a 40 m high building with a speed of 10 m/s. What is the speed of the ball when it hits the ground? (Use gravity g = 10 m/s²)

12. A ball is thrown from the roof of a 40 m high building with a speed of 10 m/s. What is the speed of the ball when it hits the ground? (Use gravity g = 10 m/s²)

13. A ball is thrown from the roof of a X1 m high building with a speed of X2 m/s at an angle of X3 degree with respect to the horizontal. What is the velocity of the ball when it hits the ground? (Use gravity g = 10 m/s²)

Friday, December 26, 2014

Sequences' Missing Members

Sequences' Missing Members:



Find the missing  members in the following sequences



1,  2,  3,  4,  5,  6,  7,  8,  9.

1,  2,  3,  4,   ,   ,   ,   ,   .

a,  b,  c,  d,   ,   ,   ,   ,   .

2,  4,  6,  8,   ,   ,   ,   ,   .

Mo, Tu, We, Th,  ,   ,   ,   ,   .

1,  4,  9,  16,  ,   ,   ,   ,   .

一, 二, 三, 四,   ,   ,   ,   ,   .

1,  2,  3,  5,  8,   ,   ,   ,   .

0,  0,  0,  1,  0,  1,  0,  2,   .

1,  8, 27,   .

J,  F,  M,  A,   ,   ,   ,   ,   .

1, 10, 11, 100,  ,   ,   ,   ,   .

|,  /,  -,  \,   ,   ,   ,   ,   .

I, II, III, IV,  ,   ,   ,   ,   .

., .., ..., ...., ____,   ,   ,   ,   .

o,  t,  t,  f,   ,   ,   ,   ,   .

α,  β,  γ,  δ,   ,   ,   ,   ,   .

о,  д,  т,  ч,   ,   ,   ,   ,   .

1,  2, 10, 11,   ,   ,   ,   ,   .

k,  M,  G,  T,   ,   ,   ,   ,   .


Saturday, November 22, 2014

A colorized scanning electron micrograph...

Vasiliy Znamenskiy shared World Science Festival's post with you.
World Science Festival
A colorized scanning electron micrograph showing sensory hair cells in the cochlea of the inner ear. Inner ear hair cells help transform vibrations into electrical signals that are sent to the brain via the auditory nerve. http://ow.ly/EIBh3
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