Wednesday
February 10, 2016

Homework Help: Science: Physics

Recent Homework Questions About Physics

Maths/physics
A catapult used to hold a stone of mass 500g is extended by 20cm with applied force .f if the stone leaves with a velocity of 40m/s,what is the value of f? Help plz
Friday, January 1, 2016 by Collins

physics
A disk with a rotational inertia of 1.4 kg×m2 and a radius of 0.8 m rotates on a frictionless fixed axis perpendicular to the disk faces and through its center. A force of 5.2 N is applied tangentially to the rim. The angular acceleration of the disk is:
Thursday, December 31, 2015 by Ahmad

physics
Three resistors having the same resistance value are wired in parallel. How does the equivalent resistance compare to the resistance value of a single resistor?
Thursday, December 31, 2015 by Tam

physics
a racing car accelerates from rest to 30m/s in 6.0s what is her average acceleration? the answer in the book is 0.5m/s^2
Thursday, December 31, 2015 by girl

physics
At a distance of 2.0 m. from a +8.0 x 10^-6 C charge, the magnitude and direction of the electric field will be?
Thursday, December 31, 2015 by Joyce

physics
Calculate the work required to be done to stop a car of 250 kg moving at a speed of 18km/hr? answer is right or not please check Mass =250 kg Velocity = 18kg = 18 x 1000/60 x 60 = 5 m/s KE = ½ mv x v = ½ x 250 x 5 = 125 x 5 = 625 J Therefore the counter back this...
Thursday, December 31, 2015 by Evangelin Lenin

physics kinematics
A river flows at 2m/s the velocity of a ferry relative to the shore is 4m/s at right angles to the current what is the velocity of the ferry relative to the current?
Thursday, December 31, 2015 by Na

Physics
A 100 kg. man decides to go bungee jumping off a bridge. The bungee cord has a relaxed length of 10.0 m, and acts as a perfect spring with a stiffness constant of 80 N/m. What is the maximum distance below the bridge that he will reach? (he will fall 10.0 m. before the bungee ...
Wednesday, December 30, 2015 by Joyce

Physics- Ballistic pendulum
A simple pendulum is made from a 2 kg. block of wood suspended from a light cord of length 1 m. When the pendulum is hanging in such a way that it is stationary and vertical, a bullet is shot horizontally into the block of wood where it sticks. The bullet has a mass of 1.00 x ...
Wednesday, December 30, 2015 by Joyce

Physics
A stone mass M thrown straight up with initial velocity V reaches a height H. A second stone of mass 2M, thrown straight up with an initial velocity 2V. What will be its height?
Wednesday, December 30, 2015 by Joyce

science,physics
Jesse Rose walks along a footpath for 6 minutes.She then cuts across a field, which takes a further 4 minutes.She walks a total distance of 900m. what is her average speed? could you please explain this step by step.
Wednesday, December 30, 2015 by ANGELINA JONES

science,physics
i do not understand this question and by the way this is not my homework. Reggie sets out from home on his bicycle.First he goes to the shop, which is 500 m away, he then rides to his friend's house which is a further 1200m.He then returns home. what total distance has ...
Wednesday, December 30, 2015 by sara

Physics
A ladder of length 10m and weight 200N leans against a smooth wall such that its at an angle of 60 degrees to the horizontal. A boy of weight 500N stands on d ladder at 2.5m of the way from the lower end of the ladder. Calculate the normal reaction at the wall and the ...
Wednesday, December 30, 2015 by Faith

physics(optics)
The critical angle between an equilateral prism and air is 45 degrees.if the incident ray is perpendicular to the refracting surface,then what happens?
Wednesday, December 30, 2015 by Timothy

Math
Out of a group of 600 students taking computer,mathematics or physics,there is no student taking both computer and mathematics.Every student takes computer or mathematics.150 takes physics and mathematics and 250 take only one of the subjects.Find 1) the number of students ...
Wednesday, December 30, 2015 by Seble

Math
Out of a group of 600 students taking computer,mathematics or physics,there is no student taking both computer and mathematics.Every student takes computer or mathematics.150 take physics and mathematics and 250 take only one of the subjects.Find 1) the number of students ...
Wednesday, December 30, 2015 by Mitu

College Physics
the electron in a hydrogen atom can, according to the Bohr atomic model, be regarded as moving at constant speed in a circular orbit of radius 0.053nm. Calculate the tangential speed of this electron
Wednesday, December 30, 2015 by Rinae

Physics
If an object of mass 150kg is brought to rest by a supporting cable from a velocity of 20m/s in a time of 5s what is the tension in the cable during this stopping period?
Wednesday, December 30, 2015 by Lisa

physics in kinematics
ebo throws a ball in the air it's velocity at the start is 18m/s at an angle of 37° to the ground express the initial velocity in component vector form?
Wednesday, December 30, 2015 by Na

Physics
A women, flying her plane south at 398 km/h when she encounters a wind blowing west at 104 km/h... A)...what would her resulting velocity be if she made no course correction B)...what speed and direction should she change to in order to maintain her original velocity. Thanks ...
Tuesday, December 29, 2015 by Alana

physics, vector
three vector f1=2i-3j -4k, f2=3i+4j-0k,f3=3i-j+5k act on a body of mass 40g causing it to displace for 10sec from p1 ( 2,3,7 ) to p2 ( 3,6,7 ). (i) estimate the over all displacement vector. (ii) estimate the resultant force on the body . (iii) what is the distance from p1 to ...
Tuesday, December 29, 2015 by isaac

Physics
A women, flying her plane south at 398 km/h when she encounters a wind blowing west at 104 km/h... A)...what would her resulting velocity be if she made no course correction B)...what speed and direction should she change to in order to maintain her original velocity. Thanks ...
Tuesday, December 29, 2015 by Alana

maths physics chemistry
State the principle on which each of the following is based. (a) the equation of continuity, Av = constant (b) the Bernoulli equation
Tuesday, December 29, 2015 by Joseph

Physics
During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs. (a) At what initial speed would a bomb have to be ejected, at angle 35degrees to the horizontal, from the vent at A in order to fall at the foot of ...
Monday, December 28, 2015 by Dee

chemistry, physics please help
Calculate the molar enthalpy of solidification when 10.00KJ of energy are lost as 30.00g water are frozen at 0*C. i divided 30/18.02 =1.664 mol then, divided 10KJ/1.664mol =6.010 KJ/mol Am i correct? Thank you!
Monday, December 28, 2015 by miyabi

Physics
The radius of the earth's orbit around the sun (assumed to be circular) is 1.50 X 108 km, and the earth travels around this orbit in 365 days. (a) What is the magnitude of the orbital velocity of the earth, in m/s? (b) What is the radial acceleration of the earth toward ...
Monday, December 28, 2015 by Edge

physics
what is the potential energy of 4 point charges each of value Q at the corners of a square of side length a.
Monday, December 28, 2015 by ruth

physics
three forces of 10N,30N and 50N act at a point at 120° to each other.Find their resultant.
Monday, December 28, 2015 by Anonymous

Physics
an athlete leaves one end of a pool pf length l at t=0 and arrives at the other end at the time t1. she swim back and arrived at the starting position at the time t2. if she is swimming initially in the position x direction. determine her average velocities symbolically in (a...
Monday, December 28, 2015 by Rea

PHYSICS
TWO FORCES F1 AND F2 ARE ACTING AT RIGHT ANGLE TO EACH OTHER FIND THE EXPRESSION FOR THE RESULTANT FORCE?
Monday, December 28, 2015 by Anonymous

physics
A 5-kg motorbike moving at 10m/s to the left collides with 6-kg motorbike moving at 12m/s to the right. the two bikes stick together after they collide. find the final speed of the composite objects and the kinetic energy dissipated in the collision.
Sunday, December 27, 2015 by Musa

physics
find the linear speed of each point 2cm and 15cm from the axis of phonograph record rotating at 33 an 1/3 rev/min
Sunday, December 27, 2015 by Musa

Physics college
A particle is thrown from the origin of the frame xOy at the moment t = 0, with speed v0 at a certain angle b from the Ox axis. At the same moment another particle begins to fall freely from a wall with height h, situated at the distance d. Air resistance is neglected. Find ...
Sunday, December 27, 2015 by Daniel

Physics help
Find the differential equation of motion for a gravitational pendulum of mass m and length a by using the fact that the torque of its weight relative to the point of suspension is equal to the time derivative its angular momentum. Solve this equation to obtain the equation of ...
Sunday, December 27, 2015 by Daniel

Physics
A particle of mass m1 experiences a perfectly elastic collision with a particle of mass m2 at rest. What fraction of the incident energy does the incident particle lose if a) it recoils at right angle to the original direction and b) the collision is head-on?
Sunday, December 27, 2015 by Cosmin

Physics
The intensity of sound is x W/m2 at a distance of 5 m from the source. What is the intensity of the sound at a distance of 20 m from the source? I am not sure how to do this problem. Thank you for your help!
Saturday, December 26, 2015 by Ellie

physics
A soccer ball is kicked from the ground with initial speed 17 m/s at angle 20 0 find a) The horizontal distance that the ball travels after 4 s ? b) The speed of the ball at the highest point ?
Saturday, December 26, 2015 by adim

physics
A soccer ball is kicked from the ground with initial speed 17 m/s. at angle(a 20 Find a) The horizontal distance that the ball travels after 4s? b) The speed of the ball at the highest point?
Saturday, December 26, 2015 by ahmed

physics
A horse pulls a boat along a canal by a rope at an angle of 60° to the bank. He produces a tension of 1500N in the string. The boat moves through a distance of 30m. Find the amount of work done by horse?
Saturday, December 26, 2015 by jyotirmay Kapil

physics
An hydraulic press has an input cylinder of 2cm diameter and an output cylinder of 6cm diameter. Find the force exerted by the output piston when a force of 20N is applied to the input piston.
Saturday, December 26, 2015 by trust

physics
It takes 2.75s for the rock to hit the water at 54.45mph, how high is the bridge?
Friday, December 25, 2015 by John

physics
The descending pulley has a radius R and mass M.Find the acceleration of block of mass m placed, on the smooth surface and connected with another light pulley.
Friday, December 25, 2015 by riya

physics
the descending pulley has a radius R and mass M.find the acceleration of block of mass m placed, on the smooth surface and connected with another light pulley
Friday, December 25, 2015 by riya

physics
A car traveled 1000 kilometers from krui to Jakarta in 15 hours. What was its average velocity?
Friday, December 25, 2015 by daim

physics
How would you explain this in 100 or so words so I can get a full comprehension of the question? Much appreciated! Please help me: discuss whether or not it is possible for an object to be increasing in speed as its acceleration is decreasing. For either position you take, use...
Wednesday, December 23, 2015 by Emily

Physics
An astronaut is stranded on another planet with UNKNOWN GRAVITY. He conducts two experiments. In the first, he drops a rock from a cliff and he finds that it takes the rock 4.15 seconds to reach the ground at the base of the cliff. In the second experiment, he throws the rock ...
Wednesday, December 23, 2015 by Emily

physics 1
An astronaut is stranded on another planet with UNKNOWN GRAVITY. He conducts two experiments. In the first, he drops a rock from a cliff and he finds that it takes the rock 4.15 seconds to reach the ground at the base of the cliff. In the second experiment, he throws the rock ...
Wednesday, December 23, 2015 by Emily

physics
Two cyclists start out on the same trail together that is overall 20km long. The first cyclist completes the entire trail and is traveling at a constant 20 km/hr for the away part of the trip and then only 15 km/hr for the return trip. the Second cyclist, who is slower, is ...
Wednesday, December 23, 2015 by Anon

Physics
I'm not sure of where to begin with this question? completely lost Two cyclists start out on the same trail together that is overall 20km long. The first cyclist completes the entire trail and is traveling at a constant 20 km/hr for the away part of the trip and then only ...
Wednesday, December 23, 2015 by Anonymous

physics
Question 1) A rock is dropped from the top of a 100 meter tall cliff. A. ) How long will it take for the rock to reach the ground. B) What will be the velocity of the rock when it hits the ground? C) How long will it take for the rock to reach the ground if the rock is thrown ...
Wednesday, December 23, 2015 by Anon

Physics
The driver of a car is going 30 m/s slams on his brakes, the car's tires lock, and the car skids to a stop on a level roadway. The kinetic coefficient of friction between its tires and the pavement is 0.75 as it slides. Draw a free body diagram of the car, find its ...
Tuesday, December 22, 2015 by Katie

physics
a side view of a car tire before it is mounted on a wheel. Model it as having two sidewalls of uniform thickness 0.695 cm and a tread wall of uniform thickness 2.50 cm and width 23.2 cm. Assume the rubber has a uniform density 1.10 103 kg/m3. Find its moment of inertia about ...
Tuesday, December 22, 2015 by Aaron

physics
1. A car travels from one point to another point that is 4km to the east of its original position and then back to its original position in 22 minutes. What will be the car's average speed? What will be the car's average velocity? 3.) A truck is moving with a velocity ...
Tuesday, December 22, 2015 by Anon

maths, physics,
An aeroplane is travelling at an air speed of 400kmh-1 with a heading of 70 degrees. a wind is blowing at a speed of 70kmh-1 from the south-east. a.) express the velocity of the helicopter and the wind in component form. b.) express the resultant velocity of the helicopter, in...
Tuesday, December 22, 2015 by laura

Physics
Two resistors 3 Ω and 6 Ω are connected in parallel across a 6 V battery. What is the current flow through the 3 Ω resistor? 6 A 3 A 4 A 2 A
Monday, December 21, 2015 by James

Physics
1. A steam engine converts 150 kg of water completely to steam. The process involves transfer of 4 x 10^8 J as heat. If steam escaping through the safety valve does 2 x 10^8 J of work against outside atmosphere, the net change in the internal energy is: a. 2 J b. 2 x 108 J c. ...
Monday, December 21, 2015 by Isabella

physics
a spring of force constant 1500N/m is acted upon Hy a constant force of 75N .calculate the potential energy stored in the spring
Monday, December 21, 2015 by Daniel

physics
A block of mass 3kg which is on a smooth inclined plane making an angle of 30° to the horizontal is connected by a cord passing over a light frictionless pulley to a second block of mass 2kg hanging vertically. What is the acceleration of each block and what is the ...
Monday, December 21, 2015 by swati

physics
A tortoise and a hare are having a 1000-meter race. The tortoise runs the race at a constant speed of 2.30 cm/s. The hare moves at an average speed of 1.50 m/s for 10.0 minutes and then decides to take a nap. After waking up from the nap, the hare recognizes that the tortoise ...
Monday, December 21, 2015 by Dina

Physics
When does the potential difference between the two terminals of the battery be zero? I think it will be zero if the battery is consumed entirely or when the circuit is open. I thought a lot but have no good answer, please help
Monday, December 21, 2015 by Asmaa khalaf

SCIENCE PHYSICS
WHEN a body hanging from a spring balance is immersed in water it floats just below the surface of water and shows 100 g loss in its weight then what is the weight of the body in water,in air,what is upthrust on the body what is the volume of tne body.
Sunday, December 20, 2015 by Junaid Shaikh

physics 1
Problem 1) I don't understand how they got the answers for A) and B) : Ima Rushin can travel from Milwaukee Avenue to the school entrance gate at a constant speed of 22.5 m/s when the lights are green and there is no traffic. On Wednesday, Ima is stopped by a red light at ...
Sunday, December 20, 2015 by Dina

physics
M1.) Nguyen jumps off a cliff with a height of 100 meters at a velocity of 3.5 meters per second to a save a cat. How long will it take her to reach the surface of the ocean? A3.) A plane vertically flees a horde of zombies at a speed of 7.9 m/s at a height of 230m above the ...
Sunday, December 20, 2015 by Emma

Physics
1. A steam engine converts 150 kg of water completely to steam. The process involves transfer of 4 x 10^8 J as heat. If steam escaping through the safety valve does 2 x 10^8 J of work against outside atmosphere, the net change in the internal energy is: a. 2 J b. 2 x 108 J c. ...
Sunday, December 20, 2015 by Helen

Physics- Help!!
1. What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C? (I thought it was 2000 kilo cals but I think I'm wrong??) a. 80 Calories b. 1440 Calories c. 4186 Calories d. 540 Calories 2. A gaseous refrigerant undergoes ...
Sunday, December 20, 2015 by Elena

Physics projectile motion
A football player kicks a ball with a soeed of 22.4 m/s at an angle of 49 degrees above the horizontal from a distance of 39.0 m from the goal post, A). By how much does the ball clear or fall short of clearing the crossbar of the goalpost if the that bar is 3.05 m high? B). ...
Sunday, December 20, 2015 by Khalid

physics
4. Let's say you're driving in your car, approaching a red light on the Camp Hill Bypass. A black Porsche is stopped at the light in the right lane, but there's no-one in the left lane, so you pull into the left lane. You're traveling at 40 km/hr, and when you...
Sunday, December 20, 2015 by ANON.

Physics
Mr. Martin springs off a 5 meter high diving board with an upward velocity of 20 m/s. A. Find Mr. Martin's height, velocity and acceleration after 0.5 seconds. B. Determine when Mr. Martin will hit the water. C. What is Mr. Martin's maximum height off the board? D. ...
Sunday, December 20, 2015 by Thea

Physics
If a steel block is on an inclining steel plane,at what angle will the block start to slide.
Sunday, December 20, 2015 by jake

Physics 1st
What will be apparent length of a rod 1m long moving with 0.7c
Sunday, December 20, 2015 by Shivam

physics
M1.) Nguyen jumps off a cliff with a height of 100 meters at a velocity of 3.5 meters per second to a save a cat. How long will it take her to reach the surface of the ocean? A3.) A plane vertically flees a horde of zombies at a speed of 7.9 m/s at a height of 230m above the ...
Sunday, December 20, 2015 by Jamie

physics
A car with mass m possesses momentum of magnitude p. Which expression correctly represents the kinetic energy, KE, of the car in terms of m and p?
Sunday, December 20, 2015 by Anonymous

physics
Two cars, one of mass 1300 kg, and the second of mass 2200 kg, are moving at right angles to each other when they collide and stick together. he initial velocity of the first car is 14 m/s in the positive x direction and that of the second car is 18 m/s in the positive y ...
Sunday, December 20, 2015 by luma

physics
Two ice skaters approach each other at right angles. Skater A has a mass of 30.7 kg and travels in the +x direction at 2.64 m/s. Skater B has a mass of 109 kg and is moving in the +y direction at 1.29 m/s. They collide and cling together. Find the final speed of the couple. ...
Sunday, December 20, 2015 by luma

physics
A(n) 2864 kg van runs into the back of a(n) 856 kg compact car at rest. They move of together at 7.5 m/s. Assuming no friction with the ground, find the initial speed of the van. Answer in units of m/s.
Sunday, December 20, 2015 by luma

physics
A rifle with a weight of 17 N fires a 3.6 g bullet with a speed of 231 m/s. The acceleration of gravity is 9.81 m/s 2 . Find the recoil speed of the rifle. Answer in units of m/s.
Sunday, December 20, 2015 by luma

physics
High-speed stroboscopic photographs show that the head of a 192 g golf club is traveling at 44.4 m/s just before it strikes a 45.9 g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 28.7 m/s. Find the speed of the golf ball ...
Saturday, December 19, 2015 by luma

physics
A 13 g toy car moving to the right at 22 cm/s has a head-on nearly elastic collision with a 22 g toy car moving in the opposite direction at 30 cm/s. After colliding, the 13 g car moves with a velocity of 43 cm/s to the left. Find the speed of the second car after the ...
Saturday, December 19, 2015 by luma

physics
A 24.9 g marble sliding to the right at 22.0 cm/s overtakes and collides elastically with a 13.2 g marble moving in the same direction at 11.8 cm/s. After the collision, the 13.2 g marble moves to the right at 25.0 cm/s. Find the velocity of the 24.9 g marble after the ...
Saturday, December 19, 2015 by luma

physics
If a 696 N man holds the rifle firmly against his shoulder, find the recoil speed of man and rifle. Answer in units of m/s.
Saturday, December 19, 2015 by luma

physics
Two carts with masses of 13.2 kg and 3.0 kg move in opposite directions on a frictionless horizontal track with speeds of 6.8 m/s and 3.5 m/s, respectively. The carts stick together after colliding head-on. Find their final speed. Answer in units of m/s.
Saturday, December 19, 2015 by luma

Physics (Heat)
Sitting under the fan on a hot day makes us feel cool.why? Give reason
Saturday, December 19, 2015 by Anuja

Physics for
A force has the dependence Fx(x) = -kx^4 on the displacement x, where the constant k = 20.3 N/m^4. How much work does it take to change the displacement, working against the force, from 0.730 m to 1.35 m?
Saturday, December 19, 2015 by Khalid

Physics
A gram molecule of a gas at 127°C expands isothermally until its volume is doubled. Find the amount of work done and heat absorbed.
Saturday, December 19, 2015 by Ques

physics
A rock is shot up vertically upward from the edge of the top of the building. The rock reaches its maximum height 2 s after being shot. Them, after barely missing the edge of the building as it falls downward, the rock strikes the ground 8 s after it was launched. Find (a) ...
Friday, December 18, 2015 by Jake

physics
Let's say you're driving in your car, approaching a red light on the Camp Hill Bypass. A black Porsche is stopped at the light in the right lane, but there's no-one in the left lane, so you pull into the left lane. You're traveling at 40 km/hr, and when you'...
Friday, December 18, 2015 by Jake

physics
What must be the radius of an unbanked (flat) curve so that a car can safely travel at a maximum speed of 39 m/s? The coefficient of static friction is 0.70.
Friday, December 18, 2015 by EMILY

PHYSICS
An object is initially moving in the positive direction of an x-axis with a speed of 2.7 m/s. If the constant acceleration of the object is -0.12 m/s2, what distance will it have traveled when it turns around?
Friday, December 18, 2015 by rebecca

Physics
A ski jumper glides down a 30.0 degrees slope for 80.0 ft before taking off from a negligibly short horizontal ramp. If the jumpers takeoff speed is 45.0 ft/s, what is the coefficient of kinetic friction between skis and slope?
Friday, December 18, 2015 by Khalid

Art
file:///C:/Users/Piccollo/Desktop/119059​7-6192014-20424-PM-1750126416.jpg In this creation what important components are used to the greatest effect? A)color and space B)architectural design**** C)physics and mathematics D)innovation and creativity Am I right?
Friday, December 18, 2015 by Animesawesome

Physics
A father pulls his son, whos mass is 25 kg and who is sitting on a swing with ropes of length 3 meters, backward until the ropes make an angle of 33.6 degrees with respect to the vertical. He then releases his son from rest. What is the speed of the son at the bottom of the ...
Friday, December 18, 2015 by Khalid

Physics
A father pulls his son, whos mass is 25 kg and who is sitting on a swing with ropes of length 3 meters, backward until the ropes make an angle of 33.6 degrees with respect to the vertical. He then releases his son from rest. What is the speed of the son at the bottom of the ...
Friday, December 18, 2015 by Khalid

Physics
1)An alloy of copper zinc has a mass of 4.9kg.when suspended in water.0.98kg of water was displaced by it.calculate the mass of zinc in the alloy if 2.5 and 19.6 are the specific gravity of the zinc and copper respectively 2) A steel ball of diameter 0.2mm, falls with a ...
Friday, December 18, 2015 by Skyboy

Physics
A box of unknown mass is sliding with an initial speed vi = 5.40 m/s across a horizontal friction-less warehouse floor when it encounters a rough section of flooring d = 3.50 m long. The coefficient of kinetic friction between the rough section of flooring and the box is 0.100...
Thursday, December 17, 2015 by Anonymous

Physics
A person weighs 600 N on Earth. What is the person's mass?
Thursday, December 17, 2015 by Val

Physics
A father pulls his son, whos mass is 25 kg and who is sitting on a swing with ropes of length 3 meters, backward until the ropes make an angle of 33.6 degrees with respect to the vertical. He then releases his son from rest. What is the speed of the son at the bottom of the ...
Thursday, December 17, 2015 by Khalid

physics
If a steel cube is placed on a surface that is increasing in slope. At what angle will the cube start to move
Thursday, December 17, 2015 by jake

Physics!
A person is standing on a 10-m bridge above a road. He wants to jump from the bridge and land in the bed of a truck that is approaching him at 30 m/s. In order to clear the bridge railing, he has to jump upward initially with a speed of 5 m/s. How far away should the truck be ...
Thursday, December 17, 2015 by Emma

Physics
Two springs are set up on a table. The longer spring has a spring constant of 221 N/m and an initial length of 44.0cm. The shorter spring has a spring constant of 725 N/m and an initial length of 22.0cm. How far above the table is an 9.30kg ball when it reaches its equilibrium...
Thursday, December 17, 2015 by john

PHYSICS
FIND THE MASS OF A 200 n BABY ELEPHANT
Thursday, December 17, 2015 by JESSICA

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