Wednesday

December 17, 2014

December 17, 2014

**Recent Homework Questions About Physics**

Post a New Question | Current Questions

**physics**

Tammy drives 34 km due north, then continues in a direction of 32◦ north of east for 99 km.What is her total displacement from the office?
*Tuesday, September 9, 2014 at 10:51pm*

**physics**

a large aircraft accelerates sown the runway for a distance of 3000m before leaving the ground. It then climbs at a steady 3 degree angle. After the plan has travelled 4000m along this new trajectory, how high is it and how far horizontally is it from its initial position?
*Tuesday, September 9, 2014 at 10:22pm*

**physics**

Runner A is initially 5.3 km west of a flagpole and is running with a constant velocity of 8.4 km/h due east. Runner B is initially 4.5 km east of the flagpole and is running with a constant velocity of 7.1 km/h due west. How far are the runners from the flagpole when their ...
*Tuesday, September 9, 2014 at 9:55pm*

**Physics**

A truck on a straight road starts from rest and accelerates at 2.8 m/s^2 until it reaches a speed of 16 m/s. Then the truck travels for 16s at constant speed until the brakes are applied,stopping the truck in a uniform manner in an additional 3.6 s. How long is the truck in ...
*Tuesday, September 9, 2014 at 9:25pm*

**Physics 2**

A proton is accelerated from rest through a potential difference of 129 V. Calculate the final speed of this proton. The mass of a proton is 1.673 × 10−27 kg and the elemental charge is 1.602 × 10−19 C . Answer in units of m/s
*Tuesday, September 9, 2014 at 9:08pm*

**physics**

A bush baby, an African primate, is capable of leaping vertically to the remarkable height of 2.3 m. To jump this high, the bush baby accelerates over a distance of 0.18m while extending the legs. The acceleration during the jump is approximately constant. What is the ...
*Tuesday, September 9, 2014 at 7:23pm*

**physics**

1.A motorist drive along a straight road at a constant speed of 15.0 m/s.Just as she passes a parked motorcycle police officer,the officer starts to accelerate at 2.0 m/s^2 to overtake her. Assuming the officer maintains this acceleration, a) determine the time it takes the ...
*Tuesday, September 9, 2014 at 6:45pm*

**physics **

A skydiver weighs 158 lb. When the skydiver reaches terminal speed, how much air drag does the skydiver experience?
*Tuesday, September 9, 2014 at 6:05pm*

**Physics**

A rubber ball is dropped onto a ramp that is tilted at 20 degrees. A bounding ball obeys the "law of reflection," which says that the ball leaves the surface at the same angle it approached the surface. The ball's next bounce is 3.0 m to the right of its first ...
*Tuesday, September 9, 2014 at 5:09pm*

**physics**

A sports car moving at constant velocity travels 110m in 5.1s .If it then brakes and comes to a stop in 4.3s , what is the magnitude of its acceleration (assumed constant) in m/s2?
*Tuesday, September 9, 2014 at 5:09pm*

**Physics**

Find the attractive force bet a 50 kg girl and a 60 kg boy, if they stand 2.00 m apart.
*Tuesday, September 9, 2014 at 4:56pm*

**physics**

Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance DA beyond the starting line at t=0. The starting line is at x=0. Car A travels at a constant speed vA. Car B starts at the starting line but has a ...
*Tuesday, September 9, 2014 at 4:50pm*

**physics**

A sports car accelerates from rest to 86km/h\, km/h in 5.2s\, s . What is its average acceleration in m/s2{\rm{m/s}}^2.
*Tuesday, September 9, 2014 at 3:28pm*

**physics**

a rolling ball moves x1 = 8.0 cm to x2 = -4.3 cm during a time interval t1= 3.5 to t2- 6.9, what is the average velocity over this time interval
*Tuesday, September 9, 2014 at 1:23pm*

**physics**

A 1600n is supported by two cables of equal length two ends are fasted by two nail by place horizontal level at 8m part .find the tension each cables when the block6m below the horizontal level.
*Tuesday, September 9, 2014 at 12:44pm*

**Physics**

A 1kg pigeon sits on the middle of a clothesline whose supports are 10m apart. The clothesline sags by 1 meter. If the weight of the clothesline is negligible, find the tension in it.
*Tuesday, September 9, 2014 at 12:02pm*

**Physics**

A stretched wire 75cm long emits a fundamental frequency of 300Hz.By how much the length be changed so that it emits a fundamental note of 450Hz?
*Tuesday, September 9, 2014 at 10:16am*

**Physics**

a racing car reaches a speed of 44m/s. at this instandt, it behins a uniform deceleration using a parachute and a braking system, and comes to a rest 4.8s later. Find the acceleration of the car
*Tuesday, September 9, 2014 at 10:03am*

**physics**

1.A motorist drive along a straight road at a constant speed of 15.0 m/s.Just as she passes a parked motorcycle police officer,the officer starts to accelerate at 2.0 m/s^2 to overtake her. Assuming the officer maintains this acceleration, a) determine the time it takes the ...
*Tuesday, September 9, 2014 at 9:45am*

**physics**

A block of mass M slides along the smooth wedge mass M.what will be the acceleration of centre of mass of block and wedge system?
*Tuesday, September 9, 2014 at 8:28am*

**Physics**

A 1kg pigeon sits on the middle of a clothesline whose supports are 10m apart. The clothesline sags by 1 meter. If the weight of the clothesline is negligible, find the tension in it.
*Tuesday, September 9, 2014 at 7:52am*

**Physics**

This is based off of the paper "Scaling -- The Physics of Lilliput", but I think the following questions can be answered out of context: 1. Based on the Lilliputian reading: A) A rectangular water tank is supported above the ground by 4 pillars 5.0 cm long whose ...
*Tuesday, September 9, 2014 at 6:22am*

**physics**

what is the perpendicular distance between two parellel rays emerging from a glass block called please give reply as tomorrow i have physics paper
*Tuesday, September 9, 2014 at 3:49am*

**physics**

A car is traveling along a straight road at a velocity of +27.7 m/s when its engine cuts out. For the next 1.94 seconds, the car slows down, and its average acceleration is . For the next 4.92 seconds, the car slows down further, and its average acceleration is . The velocity ...
*Tuesday, September 9, 2014 at 2:23am*

**physics**

Assume a projectile is launched from ground height over a flat plane, at an angle of 50 degrees above the horizontal with an initial speed of 100 m/s. What is the initial velocity of the projectile parallel to the ground (in the x direction) and perpendicular to the ground (in...
*Monday, September 8, 2014 at 9:46pm*

**physics**

A ball is tossed with enough speed straight up so that it is in the air several seconds. Assume upward direction is positive and downward is negative.What is the acceleration of the ball during any of these time intervals? What is the acceleration of the ball at the moment the...
*Monday, September 8, 2014 at 8:33pm*

**Physics**

A helicopter is ascending vertically with a speed of 5.66m/s. At a height of 106m above the Earth, a package is dropped from the helicopter. How much time does it take the package the package to reach the ground? (Ignore air resistance) I would like to know what my givens are ...
*Monday, September 8, 2014 at 7:25pm*

**physics**

A blue ball is thrown upward with an initial speed of 22.8 m/s, from a height of 0.8 meters above the ground. 2.8 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 10.9 m/s from a height of 29.3 meters above the ground. The force of ...
*Monday, September 8, 2014 at 7:00pm*

**Physics**

Vector A has a magnitude of 13.0 units and points due west. Vector B points due north. (a) what is the magnitude of B if A+B has a magnitude of 16.8 units? (b) What is the direction of A+B relative to due west? (c) What is the magnitude of B if A-B has a magnitude of 16.8 ...
*Monday, September 8, 2014 at 6:55pm*

**Physics**

You have three balls, one is thrown upward at 30m/s, on is dropped, and one is thrown toward the ground at 20m/s. what is the acceleration of the dropped ball? Vf=0m/s + (-10m/s^2)(1) =0m/s -10m?s^2 = -10m/s a= -10m/s * 0 /1 = 0 am i on the right track.....? please help
*Monday, September 8, 2014 at 6:41pm*

**physics**

Calculate the acceleration of a ball that starts from rest, rolls down a ramp, and gains a speed of 24m/sm/s in 5.8 seconds.
*Monday, September 8, 2014 at 5:37pm*

**physics**

Calculate the distance you will travel if you maintain an average speed of 12km/h for one-half hour.
*Monday, September 8, 2014 at 5:32pm*

**Physics**

Calculate the average speed (in km/h)of Larry, who runs to the store 3.6 kilometers away in 40 minutes.
*Monday, September 8, 2014 at 5:31pm*

**Physics**

You serve a tennis ball from a height of 2.1 m above the ground. The ball leaves your racket with a speed of 19.2 m/s at an angle of 5.3° above the horizontal. The horizontal distance from the court's baseline to the net is 11.83 m, and the net is 1.07 m high. Neglect ...
*Monday, September 8, 2014 at 5:15pm*

**Physics**

On a distant planet, a freely falling object has an acceleration of 17m/s2m/s^2 . Calculate the speed that an object dropped from rest on this planet acquires in 2.0ss .
*Monday, September 8, 2014 at 5:11pm*

**physics**

Two point charges 0.600 m apart experience a repulsive force of 0.400 N. The sum of the two charges equals 1.00*10^-5 C. Find the values of the two charges.
*Monday, September 8, 2014 at 3:07pm*

**Physics**

A wind is blowing with a speed of 50 mph is a direction 40 degrees west of north. What is the westerly component of the wind's velocity? What is the northerly component of this velocity?
*Monday, September 8, 2014 at 1:26pm*

**Physics**

An object starts from rest an under a constant acceleration has traveled a displacement of 30.5 meters when it reaches a certain final velocity. The same object starts from rest, but has an acceleration which is a factor of 3.3 times smaller than the original acceleration. If ...
*Monday, September 8, 2014 at 12:14pm*

**physics **

In our country and in most of other countries ,the Celsius scale is more commonly used . Can you think of a reason for this?
*Monday, September 8, 2014 at 11:34am*

**Physics**

A boy jumps from rest, straight down from the top of a cliff. He falls halfway down to the water below in 0.620 s. How much time passes during his entire trip from the top down to the water? Ignore air resistance.
*Monday, September 8, 2014 at 10:46am*

**physics**

A stone is thrown from the top of a building upward at an angle of 30.0∘to the horizontal and with an initial speed of 20.0 m/s. If the height of the building is 45.0 m, what is the speed in m/sec of the stone just before it strikes the ground ?
*Monday, September 8, 2014 at 8:18am*

**physics**

The position of a particle as it moves along the x axis is given by x = 15eƒ{2t m, where t is in s. What is the acceleration of the particle at t = 1.0 s? 4.
*Monday, September 8, 2014 at 7:37am*

**PHYSICS**

A car moves around a 4.5 km circular track at a rate of 40.0 m/s. What is the magnitude of the force that keeps a 1000-kg car in circular motion?
*Monday, September 8, 2014 at 6:23am*

**physics**

if a electricity genreter move with the speed of 60km/h how much electricity they generate in 1 minute in volt
*Monday, September 8, 2014 at 12:12am*

**Physics**

A small rock is thrown vertically upward with a speed of 14.0m/s from the edge of the roof of a 25.0m tall building. The rock doesn't hit the building on its way back down and lands in the street below. Air resistance can be neglected. What is the speed of the rock just ...
*Sunday, September 7, 2014 at 11:56pm*

**Physics**

Two cars, A and B, travel in a straight line. The distance of A from the starting point is given as a function of time by xA(t)=αt+βt^2, with α=2.60m/s and β=1.20m/s^2. The distance of B from the starting point is xB(t)=γt^2−δt^3, with γ...
*Sunday, September 7, 2014 at 11:53pm*

**physics**

A race driver has made a pit stop to refuel. After refueling, he starts from rest and leaves the pit area with an acceleration whose magnitude is 5.4 m/s2; after 4.4 s he enters the main speedway. At the same instant, another car on the speedway and traveling at a constant ...
*Sunday, September 7, 2014 at 11:46pm*

**Physics**

A 100kg trolley is being pushed up a rough 30Â° incline by a constant force. The friction force between the incline and the trolley is 110N. (a) Determine thd value of the constant force that will move the trolley up the incline at a constant velocity of 5m/s. (b) ...
*Sunday, September 7, 2014 at 11:41pm*

**physics**

A person takes a trip, driving with a constant speed 94 km/h except for a 50 min rest stop. If the person's average velocity is 74 km/h, how far is the trip? Answer in units of km.
*Sunday, September 7, 2014 at 11:20pm*

**Physics**

Two ping-pong balls each have a mass of (1.4x10^0) g and carry a net charge of (3.99x10^0) μC. One ball is held fixed. At what height should the second ball be placed directly above the fixed ball if it is to remain there?
*Sunday, September 7, 2014 at 11:00pm*

**Physics**

Two 34 −ìC charges are attached to the opposite ends of a spring of spring constant 150 N/m and equilibrium length 50 cm. that is the question I should probably know this but my brain is fried so far all I have is Original length = 50 cm = 0.5 m Let the spring ...
*Sunday, September 7, 2014 at 10:31pm*

**Physics**

What electric field strength would store 17.5J of energy in every 9.00mm3 of space?
*Sunday, September 7, 2014 at 9:55pm*

**Physics**

A Honda Civic travels in a straight line along a road. Its distance x from a stop sign is given as a function of time t by the equation x(t)= α t^2− β t^3, where α = 1.54m/s2 and β = 5.05×10−2m/s^3 . Calculate the average velocity of the ...
*Sunday, September 7, 2014 at 9:13pm*

**Physics **

Two 0.75m -long pendulums hang side by side. The masses of the pendulum bobs are 65g and 85g . The lighter bob is pulled aside until its string is horizontal and is then released from rest. It swings down and collides elastically with the other bob at the bottom of its arc.To ...
*Sunday, September 7, 2014 at 9:01pm*

**Physics**

A car travels in the +x-direction on a straight and level road. For the first 5.00s of its motion, the average velocity of the car is V = 7.11m/s . How far does the car travel in 5.00s ? Thank you!
*Sunday, September 7, 2014 at 8:53pm*

**physics**

A rifle with a muzzle velocity of 480 m/s shoots a bullet at a target 45.6 m away. How high above the target must the rifle barrel be pointed to ensure that the bullet will hit the target? Neglect air resistance.
*Sunday, September 7, 2014 at 8:31pm*

**AP Physics C**

as she pick up her riders a bus driver traverses four successive displacements represented by the expression (-6.30 b)i-(4.00 b cos 40)i-(4.00 sin 40)j+(3.00 b cos 50)i-(3.00 b sin 50)j-(5.00 b)j here b represents one city block,a convenient unit of distance of uniform size; i...
*Sunday, September 7, 2014 at 8:10pm*

**physics**

How long will it take a cat to run 8.2m [N] at an average velocity of 3.7m/s [N]
*Sunday, September 7, 2014 at 7:21pm*

**Physics**

A 330.0 g block is dropped onto a vertical spring with a spring constant k = 234.0 N/m. The block becomes attached to the spring, and the spring compresses 0.26 m before momentarily stopping. A) While the spring is being compressed, what what is the change in the objects ...
*Sunday, September 7, 2014 at 6:55pm*

**Physics**

At one instant a bicyclist is 40 m due east of a park's flagpole, going due south with a speed of 18 m/s. Then, 23 s later, the cyclist is 55 m due north of the flagpole, going due east with a speed of 12 m/s. For the cyclist in this 23 s interval, find each of the ...
*Sunday, September 7, 2014 at 6:38pm*

**physics**

Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an initial velocity of +4100 m/s, while rocket B has an initial velocity of +9400 m/s. After a time t both rockets are again side by side, the displacement of...
*Sunday, September 7, 2014 at 5:41pm*

**physics**

A ball is thrown straight up with an initial speed of 60 m/s. How high does it go? Assume the accelera- tion of gravity is 10 m/s22
*Sunday, September 7, 2014 at 4:53pm*

**college physics**

A 49-kg lead ball is dropped from the leaning tower of Pisa. The tower is 54 m high. (a) How far does the ball fall in the first 2.4 seconds of flight? (b) What is the speed of the ball after it has traveled 4.1 m downward? (c) What is the speed of the ball 1.7 s after it is ...
*Sunday, September 7, 2014 at 4:51pm*

**physics**

In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 11.0 m/s in 2.58 s. Assuming that the player accelerates uniformly, determine the distance he runs.
*Sunday, September 7, 2014 at 4:24pm*

**physics**

Over a time interval of 2.17 years, the velocity of a planet orbiting a distant star reverses direction, changing from +19.3 km/s to -22.9 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) during this interval. ...
*Sunday, September 7, 2014 at 4:03pm*

**Physics**

An 84.9 kg man is standing on a frictionless ice surface when he throws a 2.00kg book at 11.1m/s. With what velocity does the man move across the ice?
*Sunday, September 7, 2014 at 3:41pm*

**Physics**

A car slows from 23 m/s to 3.4 m/s at a constant rate of 2.1 m/s2. How many seconds are required before the car is traveling at 3.4 m/s?
*Sunday, September 7, 2014 at 3:31pm*

**Physics**

Two trains are approaching each other, one at 23 mph and the other at 37 mph. How far apart are they one minute before collision?
*Sunday, September 7, 2014 at 2:10pm*

**physics**

A net force of 5000.0 N accelerates a car from rest to 93.3 km/h (meter per second) in 4.1s (a)what is the mass of the car? (b) What is the weight of the car?
*Sunday, September 7, 2014 at 2:07pm*

**physics**

Due to continental drift, the North American and European continents are drifting apart at an average speed of about 3 cm per year. At this speed, how long (in years) will it take for them to drift apart by another 658.1 m?
*Sunday, September 7, 2014 at 1:46pm*

**physics**

Clint Dempsey takes a free kick and kicks a soccer ball with a mass of 440 grams at 98 miles per hour. what is the momentum
*Sunday, September 7, 2014 at 1:26pm*

**Physics**

A particle moves according to the equation x(t) = (10 m/s2) t2 where x is in meters and t is in seconds. Find the average velocity for the time interval from t1 = 2.0 s to t2 = 3 s. Answer in units of m/s. Please help! I have no idea how to set this up :(
*Sunday, September 7, 2014 at 12:58pm*

**physics**

A person swims with a speed v realative to water What dose this mean?
*Sunday, September 7, 2014 at 8:31am*

**Physics**

Two point charges are located on the y axis as follows: charge q1 = -2.50nC at y1 = -0.700m , and charge q2 = 3.30nC at the origin (y = 0). What is the magnitude of the net force exerted by these two charges on a third charge q3 = 9.00nC located at y3 = 0.250m ? What is the ...
*Sunday, September 7, 2014 at 4:18am*

**Physics**

Two small plastic spheres are given positive electrical charges. When they are 11.0cm apart, the repulsive force between them has magnitude 0.300N. What is the charge on each sphere if one sphere has four times the charge of the other?
*Sunday, September 7, 2014 at 4:16am*

**Physics**

A charge q1 = 5.00nC is placed at the origin of an xy-coordinate system, and a charge q2 = -2.00nC is placed on the positive x axis at x= 4.00cm . If a third charge q3 = 6.50nC is now placed at the point x= 4.00cm , y= 3.00cm find the x and y components of the total force ...
*Sunday, September 7, 2014 at 4:12am*

**physics**

the net external force on a golf cart is 390 n north. if the cart has a total mass of 220 kg. what is the magnitude and direction of its acceleration
*Sunday, September 7, 2014 at 2:19am*

**physics**

A spacecraft of mass 3.5 x 102kg was moving at 1.5 x 102ms-1 when its motor, operating at 8.4 x 102 kW fired for 5.0s Find the new velocity acquired by the spacecraft I dont know how to find the new velocity i found the work Power = w/t 840 x 5 = W 4200J = W Dont know what to ...
*Saturday, September 6, 2014 at 10:06pm*

**Physics**

You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 8.0 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the maximum height above ...
*Saturday, September 6, 2014 at 7:53pm*

**Physics for Technology**

I have been out of school 27 years; no Algebra or Trigonometry training: only remedial math. This class is part of a Diploma program, no placement test required - I am out of my depth. I had a tutor for an hour last Tues., with another appt. this Tues. Yet, like I told my ...
*Saturday, September 6, 2014 at 7:36pm*

**physics**

In reaching her destination, a backpacker walks with an average velocity of 1.22 m/s, due west. This average velocity results, because she hikes for 5.61 km with an average velocity of 2.69 m/s due west, turns around, and hikes with an average velocity of 0.367 m/s due east. ...
*Saturday, September 6, 2014 at 7:26pm*

**physics**

A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 54° above the horizontal. The end of the ramp is 1.4 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point ...
*Saturday, September 6, 2014 at 7:14pm*

**Physics II**

What is the sign and magnitude of a point charge that produces a potential of -2.00 V at a distance of 3.00 mm?
*Saturday, September 6, 2014 at 3:20pm*

**Physics II**

What is the sign and magnitude of a point charge that produces a potential of -2.00 V at a distance of 3.00 mm?
*Saturday, September 6, 2014 at 3:15pm*

**Physics**

A wooden bridge crossing a canyon consists of a plank with length density λ = 2 kg/m suspended at h = 10.0 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank, as shown in the figure. ...
*Saturday, September 6, 2014 at 12:39pm*

**physics**

A flat circular plate of copper has a radius of 0.278 m and a mass of 42.6 kg. What is the thickness of the plate? answer in units of m
*Saturday, September 6, 2014 at 12:31pm*

**physics**

Two objects with masses 2.0 and 3.0 kg move toward each other, both with speeds V0 = 5.0 m/s. They collide head on and stick together. (a) Calculate their final velocity. (b) Calculate the amount of kinetic energy lost during the process. (c) Suppose the two masses approach ...
*Saturday, September 6, 2014 at 12:29pm*

**Physics Help!!!!**

Describe what it means (describe the motion) if the acceleration vector has the same direction as the velocity vectors, and what it means if the acceleration vector has the opposite direction as the velocity vectors. Consider all four possibilities and explain what would ...
*Saturday, September 6, 2014 at 11:20am*

**physics**

A bus accelerates at 1.4 m/s2 from rest for 14 s. It then travels at constant speed for 23 s, after which it slows to a stop with an acceleration of magnitude 1.3 m/s2.
*Saturday, September 6, 2014 at 11:19am*

**Physics**

1.A bus travels 400 m between two stops. It starts from rest and accelerates at 1.50 m/s^2 until it reaches a velocity of 9.00 m/s. The bus continues at this velocity and then decelerates at 2 m/s^2 until it comes to a halt. Find the total time required for the journey. 2.A 28...
*Saturday, September 6, 2014 at 3:11am*

**Physics**

A ball is thrown vertically upward from the ground with a speed of 36.0 m/s.Suppose the acceleration of gravity were only 2.00 m/s^2 instead of 9.80 m/s^2 a)At what time does it have a velocity of 12.0 m/s upward? b)At what time does it have a velocity of 12.0 m/s downward? c)...
*Saturday, September 6, 2014 at 3:00am*

**Physics**

What is the connection between Weber’s Law, Fechner’s Law, and Steven’s Power Law
*Saturday, September 6, 2014 at 2:00am*

**physics**

a fire hose hold near the ground shoots water at speed of 6.8 m/s at what angle(s) should the nozzle point in order that the water land 2 dm away why are there two diffent angles?
*Saturday, September 6, 2014 at 1:39am*

**Physics Help!!!!**

Describe what it means (describe the motion) if the acceleration vector has the same direction as the velocity vectors, and what it means if the acceleration vector has the opposite direction as the velocity vectors. Consider all four possibilities and explain what would ...
*Friday, September 5, 2014 at 11:54pm*

**Physics**

Two small pith balls, each of mass m = 17.4 g, are suspended from the ceiling of the physics lab by 1.2 m long fine strings and are not moving. If the angle which each string makes with the vertical is = 17.9°, and the charges on the two balls are equal, what is the ...
*Friday, September 5, 2014 at 11:22pm*

**Physics**

Instructions for finding a buried treasure include the following: Go 745.6 paces at 298◦, turn to 204◦ and walk 178 paces, then travel 490 paces at 55◦ Find the magnitude of the resultant displacement from the starting point. Answer in Units of paces. (Part ...
*Friday, September 5, 2014 at 11:20pm*

**physics**

On a safari, a team of naturalists sets out toward a research station located 5.54 km away in a direction 47.9 ° north of east. After traveling in a straight line for 1.29 km, they stop and discover that they have been traveling 24.6 ° north of east, because their ...
*Friday, September 5, 2014 at 10:53pm*

**AP Physics **

A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.90 s after the ball is released from his hands. What is the speed of the ball? The speed of sound is 340 m/s. Answer ...
*Friday, September 5, 2014 at 10:44pm*

**AP Physics **

Two locomotives approach each other on parallel tracks. Each has a speed of v = 85 km/h with respect to the ground. If they are initially d = 7.0 km apart, how long will it be before they reach each other?
*Friday, September 5, 2014 at 10:44pm*

**AP Physics **

A car traveling 92 km/h is 130 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck?
*Friday, September 5, 2014 at 10:43pm*

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