# Posts by Chan

Total # Posts: 118

**physic**

An object with mass m1 = 5.00 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2 = 10.0 kg, as shown in the figure below. Find the acceleration of each object and the tension ...

*October 15, 2009*

**physic**

A 660 N cat burglar is supported by cables in the figure below. Assume the angle è of the inclined cable is 36.0°. Find vertical cable? Thank you so much for your help.

*October 12, 2009*

**physic**

Hi!Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 439 N(10degree) and F2 = 365 N(30degree). (Assume up and to the right as positive directions.) (a) What is the resultant of these two forces? magnitude____N direction_____&...

*October 12, 2009*

**physic**

Hi!Question:Two packing crates of masses m1 = 10.0 kg and m2 = 6.50 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 6.50 kg crate lies on a smooth incline of angle 45.0°. Find the acceleration of the 6.50 kg crate. ...

*October 9, 2009*

**physic**

Hi!An object with mass m1 = 5.00 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2 = 10.0 kg, as shown in the figure below. Find the acceleration of each object and the ...

*October 9, 2009*

**physic**

A projectivle is launched with an initial speed of 40m/s at an angle of 35 degree above the horizontal. The projectitile lands on a hillside 4s later. negelct air friction. a.What is the straight-line distance form where the prjectile was launched to where it hits its target?...

*September 30, 2009*

**physic**

Hi!Question:The helicopter view in the fiure below shows two people pulling on a stubborn mule. Asume that F1 is 110N, and F2 si 70N. The forces are measured in units of newtons(N). a.Find the single force that is equivalent to the two forces shown. magnitude____N ...

*September 30, 2009*

**physic**

Hi!Question: A river flows due east at 1.70m/s.A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 8.0m/s due north relative to the water. A.What is the velocity of the boat relative to shore?___m/s and ___degree(north of east...

*September 30, 2009*

**physic**

Hi! Question:A ball is tossed from an upper-story window of a building.The ball is given an initial velocity of 7.80m/s at an angle of 21.0 degrees below the horizontal.It strikes the ground 3.00s later. A.How far horizontally from the base of the building does the ball strik ...

*September 30, 2009*

**physic**

Hi, could you help me please Question: A tortoise can run with a speed of 0.12 m/s and a hare can run 20 times as fast. in a race, they both start at the same time, but the hare stops to rest for 2.0 minutes. The tortoise wins by a shell (25cm). A.How long does the race takes...

*September 24, 2009*

**Physic**

A tortoise can run with a speed of 0.12m/s and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 2.0 minutes. The tortoise wins by a shell(25cm). A. how long does the race takes? B. What is the length of race?

*September 23, 2009*

**Physic**

A ball is thrown vertically upward with a speed of +12.0m/s. A. how long the ball take to hit the ground after it reaches it highest point? B. What is its velocity when it returns to the level from with it started?

*September 23, 2009*

**eth125**

How do you think slavery influenced the evolution of both black and white america today?explain your answer.

*September 21, 2009*

**Algebra 1**

Multiply both sides by -5. x=-5/16

*April 27, 2009*

**7th grade**

what is a process used to investigate the world around you?

*October 9, 2008*

**English**

tense refers to time. is the article written in present time (tense), past, or future? you have to read and look for words such as go (that is present), went (past), will go (future).

*October 9, 2008*

**calculus**

For what positive numbers will the square of a number exceed twice the number?

*August 4, 2008*

**calculus**

How do I find the domain of: y=squareroot of x^3-3x^2 ?

*August 4, 2008*