Sunday

February 19, 2017
**physics**

A 3 kg block is released from rest at the top of a 20 m long frictionless ramp that is 5 m high. Find the values for the block just before it reaches ground level. (a) gravitational potential energy ----J (b) kinetic energy ----J (c) speed -----m/s (d) momentum ------kg·m/s

*Wednesday, November 2, 2016 by Sue*

**physics**

Two crates rest on top of one another.There is a crate of mass 4.62 kg on top of another crate of mass 2.19 kg. The coefficient of friction between the lower crate and the floor is μk = 0.440 and the coefficient of static friction between the two crates is μs = 0.870. If the...

*Wednesday, November 2, 2016 by 2FUN*

**physics**

Two buses leave a bus station and travel in opposite direction from the same standing point.if the speed of one is twice the other and they are 240km apart at the end of one hour. What is the speed of each km

*Wednesday, November 2, 2016 by anonymous*

**Physics**

calculate the magnitude of electrostatic force on a charge placed at a vertex of a triangular pyramid (4 vertices, 4 faces), if 4 equal point charges are placed at all four vertices of pyramid of side'a.

*Wednesday, November 2, 2016 by Vandit Shah*

**Physics**

What does it mean if a motor is described as “One Horsepower”?

*Wednesday, November 2, 2016 by Daddy*

**Physics**

An electric train leaves a station starting from rest and attains a speed of 72km/hr in 10 second. It travels at that speed for 120 seconds. Then it undergoes uniform retardation for 20 seconds to come to halt at the next station calculate : a) distance between the train ...

*Wednesday, November 2, 2016 by Amrit*

**Physics 1**

A 2.5 meter long string vibrates as a 100 hertz standing waves with nodes at 1.5 meters and 1.0 meters from one end of the string and at no points between the two strings, which harmonic is this? and what is the strings fundamental frequency?

*Wednesday, November 2, 2016 by Derrick Ngugi*

**physics**

What is the rotational speed of the hour hand on a clock? -----rev/s

*Wednesday, November 2, 2016 by Sue*

**Advanced Physics**

What is the displacement for the following vectors? A vector moving 45 degrees northeast at a velocity of 3m/s and turns 30 degrees southeast

*Wednesday, November 2, 2016 by Chanda*

**Physics 1**

a 12.5 m long string vibrates as 100 hertz standing wave with nodes at 1.0m and 1.5m from one end of the string and at no points in between the two. Which harmonic is this? What is the string's fundamental frequency?

*Wednesday, November 2, 2016 by David*

**physics**

An ideal gas has the following initial conditions: Vi = 490 cm3, Pi = 5 atm, and Ti = 100°C. What is its final temperature if the pressure is reduced to 1 atm and the volume expands to 1000 cm3? _____°C

*Wednesday, November 2, 2016 by Katelyn*

**physics**

The pressure in each of your car tires is 2.10 105 Pa. The mass of your car is 1550 kg. Assuming that each of your tires bears one-quarter of the total load, what is the contact area of each tire with the road? ______ m2

*Wednesday, November 2, 2016 by Katelyn*

**physics**

Given that the carbon atom has a mass of 12 amu, how many carbon atoms are there in a diamond with a mass of 8 g? ....atoms

*Wednesday, November 2, 2016 by Math*

**physics**

A ham sandwich consists of one slice of ham (9 grams) and two slices of bread (25 grams each). You have 1 kg of ham and 1.2 kg of bread. You make as many sandwiches as you can. How many sandwiches did you make? 1) How many sandwiches? 2) What is the mass of the sandwiches? g 3...

*Tuesday, November 1, 2016 by Beth*

**physics**

What is the rotational speed of the hour hand on a clock? -----rev/s

*Tuesday, November 1, 2016 by Sue*

**physics**

A variable-speed drill, initially turning at 150 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration? ----rpm/s2

*Tuesday, November 1, 2016 by Sue*

**physics**

Two crates rest on top of one another.There is a crate of mass 4.62 kg on top of another crate of mass 2.19 kg. The coefficient of friction between the lower crate and the floor is μk = 0.440 and the coefficient of static friction between the two crates is μs = 0.870. If the...

*Tuesday, November 1, 2016 by 2FUN*

**physics**

You are driving at the speed of 34.3 m/s (76.7433 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes. Considering an average human reaction, you press the brakes 0.429 s later. Assume that the brakes on both cars are fully engaged and ...

*Tuesday, November 1, 2016 by Abby*

**Physics**

The work function for a particular metal is 2.18 eV. What is the kinetic energy in eV of photoelectrons ejected when 410 nm violet light falls on this metal?

*Tuesday, November 1, 2016 by Hannah*

**physics**

A can of Coke moving 15.6 m/s toward the right(the positive direction) collides with a can of Pepsi moving 3.21 m/s toward the left, and both cans are badly crunched. If the final velocity of the can of Coke is 2.48 m/s still toward the right, then what is the final velocity ...

*Tuesday, November 1, 2016 by Mary*

**Physics**

Calculate the speed a spherical rain drop would achieve falling from 5.00 km (a) in the absence of air drag (b) with air drag. Take the size across of the drop to be 4 mm, the density to be 1.00×103 kg/m3 , and the surface area to be πr2

*Tuesday, November 1, 2016 by Jill*

**physics**

bobpursley pleas put more details on how you got your answers to my previous physics questions... thanks

*Tuesday, November 1, 2016 by Lorenz*

**Physics**

A ballistic pendulum is a device for measuring bullet speeds. One of the simplest versions consists of a block of wood hanging from two long cords. (Two cords are used so that the bottom face of the block remains parallel to the floor as the block swings upward.) A 0.013-kg ...

*Tuesday, November 1, 2016 by Mat*

**Physics**

A 0.45-kg soccer ball is kicked at an angle θ above the ground with initial speed vi. Determine the height of the ball as a function of the horizontal distance d it travels down the field.

*Tuesday, November 1, 2016 by Mat*

**physics**

A group of construction workers are building a house and want to lower down an excess bundle of 1420 kg bricks to ground. They tie one end of a rope to the bundle of bricks, loop it through a pulley, and tie the other end of the rope to a toolbox. If the coefficient of kinetic...

*Tuesday, November 1, 2016 by Thank you*

**physics**

A 1070 kg hybrid car pushes a 2140 kg Jeep that has died on railroad tracks. If the wheels of the hybrid car push against the ground with 5890 N of force, what is the magnitude of the force between the hybrid car and the Jeep? Assume there is no rolling friction.

*Tuesday, November 1, 2016 by 2FUN*

**Physics**

A car starts from rest and attains a velocity of 40 metres per second in 20 seconds. it maintains this velocity for 30 seconds and then comes to rest in 25 seconds. 1. sketch the velocity time graph for the motion. 2. Calculate the acceleration of the body. 3. Calculate the ...

*Tuesday, November 1, 2016 by Clinton*

**PHYSICS**

what is the angle velocity of an object in a horizontal circular part with radius 1.5 with a constant speed of 12/s

*Tuesday, November 1, 2016 by tope*

**physics**

Movers are looking to lower a cabinet out of an open window to a mattress on the ground below. One end of a rope is tied to a 193 kg dresser, looped through a pulley, and the other end of the rope is tied to a cabinet. If the coefficient of kinetic friction between the dresser...

*Tuesday, November 1, 2016 by 2FUN*

**physics**

A car of mass m is going around a circular turn of radius R, which is banked at an angle Î² with respect to the ground. Assume there is friction between the wheels and the road. Let Î¼s be the coefficient of static friction and g the magnitude of the gravitational ...

*Tuesday, November 1, 2016 by simon*

**Physics**

A body A of a mass 0.16 kg exerts a force of 6.2x10^-10 N on a body B when the distance between their centers is 0.37 meters. What is the mass of body B?

*Tuesday, November 1, 2016 by Anonymous*

**physics**

A block and tackle has a velocity ratio of 4 and it is used to vertically raise a load of mass 50kg.if the effciency is 80%,determine the minimum effort reguired to raise the load.

*Tuesday, November 1, 2016 by Anonymous*

**Physics**

A block of metal, mass m kg, is placed on a horizontal frictionless surface. It is then acted upon by a force equal to half its weight in a direction parallel to the surface. What's the acceleration it experience?

*Tuesday, November 1, 2016 by Bella*

**Physics**

A man pushes a lawn mower on a level lawn with a force of 203 N. If 26% of this force is directed downward, how much work is done by the man in pushing the mower 7.0 m?

*Tuesday, November 1, 2016 by Chase*

**Physics**

Hello, I need some help with this physics problem. This was the only one I couldn't solve, and the teacher wouldn't help me because she wanted me to figure it out for myself, just like everyone else tried. (Although no one did) Here is the question: Type in imgur dot com slash...

*Tuesday, November 1, 2016 by Albert*

**Physics**

Suppose that a cars x-acceleration during a certain time period is given by the function a(t) = -bt. If the cars x-velocity at t=0 is 32m/s, and b=1m/s^2, how long will it take the car to come to rest.

*Tuesday, November 1, 2016 by Daniel*

**Physics**

What is the terminal speed for an 77 kg skier going down a 45 âˆ˜ snow-covered slope on wooden skis Î¼k= 0.060? Assume that the skier is 1.8 m tall and 0.40 m wide. Assume the skier's drag coefficient is 0.80. Express your answer using two significant figures with the ...

*Monday, October 31, 2016 by Niko*

**URGENT ANY PhYSIcs teacher help thouroighly pls**

The coefficiant of friction between rubber tires and wet pavement is 0.5. Breaks are alllied to a 750kg car, intitally travelling at 30 m/s and the car skids to a stop. What is the magnitude and direction of the acceleration. Ik the magnitude and i kinda get how to do the ...

*Monday, October 31, 2016 by Michael*

**Physics 11 damon pls URGENT!**

The coefficiant of friction between rubber tires and wet pavement is 0.5, and the breaks are applied to 750kg car, intitally travelling at 30m/s and the car skids to a stop. What is size and difection of the acceleration. How do i find acceleration of the vehicle

*Monday, October 31, 2016 by Jaena MacCharly*

**Physics 11 steve, bob,physics expert pls URGENT!!**

Coefficiant of friction between rubber tires and wet pavement is 0.50. brakes are applied to a 750kg car, intitally travelling at 30m/s and the car skids to a stop. What is the size and direction of the acceleration of the car.

*Monday, October 31, 2016 by Boby*

**physics**

(1) A uniform meter rod 4ON has a piece of weight of 2ON attached to one of its end. What is the center of gravity of the system from the weight end? (2) two bodies X and Y start from rest and move with uniform acceleration of a and 4a respectively. If the bodies cover the ...

*Monday, October 31, 2016 by Lorenz*

**physics**

A 84.0 kg person is being pulled away from a burning building as shown in the figure below.

*Monday, October 31, 2016 by bless*

**Physics**

When the Sun is directly overhead, a hawk dives toward the ground at a speed of 6.09 m/s. If the direction of his motion is at an angle of 78.6 â—¦ below the horizontal, calculate the speed of his shadow along the ground. Answer in units of m/s

*Monday, October 31, 2016 by Jack*

**physics**

A car travels at a constant speed around a circular track whose radius is 2.87 km. The car goes once around the track in 332 s. What is the magnitude of the centripetal acceleration of the car?

*Monday, October 31, 2016 by BrookeNeed*

**Physics**

A girl delivering newspapers travels 3 blocks west, 8 blocks north, then 5 blocks east. 1) What is the magnitude of her resultant displacement? Answer in units of blocks. 2) Find the direction (measured from due east, with counterclockwise positive) of her displacement. Answer...

*Monday, October 31, 2016 by Jazz*

**Physics**

You buy a plastic dart gun, and being a clever physics student you decide to do a quick calculation to find its maximum horizontal range. You shoot the gun straight up, and it takes 36.761s for the dart to land back at the barrel. What is the maximum horizontal range of your gun?

*Monday, October 31, 2016 by Rose*

**physics**

a uniform pole 7m long and weighing 10kg suppoted by a boy 2m from one end man3 from other end

*Monday, October 31, 2016 by sammani*

**Physics**

A spring is attached to the top of a table. The spring has a spring constant of 500.0 N/m. The spring is initially compressed by 1.50 m by a baseball (0.145 kg). How much energy is present in the system from the compression? After release, what is the velocity at which the ...

*Monday, October 31, 2016 by Daddy*

**Physics**

a spring hanging from the ceiling. The spring constant present is 200N/m. If a mass of 50 kg is attached, how far does the spring stretch?

*Monday, October 31, 2016 by Daddy*

**PHYSICS**

A person sits on a frictionless stool that is free to rotate but is initally at rest. The person holding a bicycle wheel (I = 3 kg*m2) that is 8 rev/s in the clockwise direction as viewed from above, and the moment of inertia of the person-sheel-stool system is 9 kg*m2. 1. ...

*Monday, October 31, 2016 by LESTER*

**physics**

If the gravitational force F is given by F=GM1M2Ãƒ·rÃƒâ€”r.derive the dimensions of the universal constant of the gravitational G

*Monday, October 31, 2016 by fcvmlt*

**Physics - Circular motion**

A domesticated pig places a 100g rubber puck on a turntable. The turntable is set at a rate of 78rpm,and the pig knows the coefficient of static friction is 0.37 between the puck and turntable surface. A) How far out from the center of the turntable can the puck be places ...

*Monday, October 31, 2016 by Matt*

**Physics - circular motion**

You approach a slight bump in the road on the highway in a car. The bump carries you into a circular (convex) vertical arc of radius 39m. A) choosing two different cars ( it is for you to choose 2 particular models, providing the mass of each), at what maximum speed can you ...

*Monday, October 31, 2016 by Matt*

**physics**

The large quadriceps muscle in the upper leg terminates at its lower end in a tendon attached to the upper end of the tibia (see figure (a)). The forces on the lower leg when the leg is extended are modeled as in figure (b), where vector T is the force of tension in the tendon...

*Monday, October 31, 2016 by Bella*

**Physics**

a truck travels up a hill with a 12% incline. the truck has a constnt speed of 22m/s. what is the horizontal componet of the reucks velocity

*Monday, October 31, 2016 by Zach*

**PHYsics**

A sprinter of mass 70.7 kg runs at a constant speed of 10.5 m/s in a straight line. Find the extra force the sprinter must exert on the ground to round a curve of radius 10.6 m.

*Monday, October 31, 2016 by Brint*

**Physics**

2. The average atmospheric pressure at sea level is approximately 101 000 Pa. If the density of air at 0◦C is approximately 1.3 kg , how high does the atmosphere extend?

*Monday, October 31, 2016 by Merdreik*

**Physics**

A long, straight wire with a circular cross section of radius R carries a current I. Assume that the current density is not constant across the cross section of the wire, but rather varies as J=αr, where α is a constant. A) By the requirement that J integrated over ...

*Monday, October 31, 2016 by Ayaka*

**Physics**

A piece of copper ball of mass 30grams at 150 degree celcius is placed in a copper calorimeter of mass 70gams containing 60grams of waterof copper 40degree celcius if the final ofthe mixture is 50degree celcius calculate the specific heat capacity of copper (specific heat ...

*Monday, October 31, 2016 by Elizabeth Avan*

**Physics**

A student holds a bike wheel and starts it spinning with an initial angular speed of 7.0 rotations per second. The wheel is subject to some friction, so it gradually slows down. In the 10-s period following the inital spin, the bike wheel undergoes 60.0 complete rotations. ...

*Monday, October 31, 2016 by Morgan*

**Physics**

A uniform disk of radius 0.485 m and unknown mass is constrained to rotate about a perpendicular axis through its center. A ring with same mass as the disk\'s is attached around the disk\'s rim. A tangential force of 0.247 N applied at the rim causes an angular acceleration of...

*Monday, October 31, 2016 by Morgan*

**Physics**

A flywheel in the form of a uniformly thick disk of radius 1.48 m, has a mass of 43.6 kg and spins counterclockwise at 303 rpm. Calculate the constant torque required to stop it in 2.50 min.

*Monday, October 31, 2016 by Morgan*

**Physics**

Six dogs pull a two-person sled with a total mass of 280 kg. The coefficient of kinetic friction between the sled and the snow is 0.080. The sled accelerates at 0.65 m/s2 until it reaches a cruising speed of 15 km/h. What is the team's maximum power output during the ...

*Sunday, October 30, 2016 by Alex*

**Physics**

A pile driver lifts a 450 kg weight and then lets it fall onto the end of a steel pipe that needs to be driven into the ground. A fall of 1.5 m drives the pipe in 45 cm. What is the average force exerted on the pipe?

*Sunday, October 30, 2016 by Alex*

**Physics**

A concave, spherical mirror and a thin, converging lens are both measured in air (n=1.0) to have the same focal length, ff. Both the mirror and the lens are then placed under water (n=1.33) and their focal lengths are measured again. For both the mirror and the lens state ...

*Sunday, October 30, 2016 by Urgent Help Needed Please!!!*

**Physics 11 urgent Steve, bob, damon pls**

A 30 kg student pushes a 20kg box on frictionless surface. If student accelerates at 0.8m/s^2(N),what is acceleration of bix. now why does the box acceerate towards south, if it is being pushed north should it not move north.

*Sunday, October 30, 2016 by IZAAK SiDney Dunkan*

**physics**

A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the numerical values of ...

*Sunday, October 30, 2016 by Michael*

**Physics**

A soccer play kicks the ball toward a goal that is 29m in front of him. The ball leaves his foot at a speed of 19m/s and at an angle of 32degrees above the ground. Find the speed of the ball when the goalie catches it in front of the net. my work: vxi=16.1 vxf=16.1 ax=0

*Sunday, October 30, 2016 by Morgan*

**university physics**

An object at rest explodes into three fragments. The figure shows the momentum vectors of two of the fragments: vector P1 is directed along the px axis and has a magnitude of 74.0 kg m/s. vector P2 is at an angle of 300.° measured counterclockwise from the positive px axis ...

*Sunday, October 30, 2016 by katarina*

**Physics 11 steve or any physics teacher helpURGENT**

A 30kg student pushes a 20kg box on a frictionless surface. If student accelerates at 0.80 m/s^2, what is acceleration of the box. My question is why does the box accelerate in opposite direction of the boy, and how does the frictionless surface affect this question?

*Sunday, October 30, 2016 by Brayden Hugo*

**Physics**

Which are in static equilibrium? 1. A box sliding down a ramp. 2. A baseball after being hit. 3. A box sliding along a horizontal surface. 4. A perfectly upright freely spinning top 5. A freely swinging simple pendulum 6. A spinning astronaut floating out in deep space. 7. A ...

*Sunday, October 30, 2016 by Jerry*

**Quick Physics Question**

Are both linear and angular momentum conserved in static equilibrium ?

*Sunday, October 30, 2016 by Tom*

**physics**

The ice skate of a 210-pound hockey player is in contact with the ice over a 2.5mm x 15cm area. Determine the freezing point of the ice under the blade of the skate?

*Sunday, October 30, 2016 by Joseph*

**Physics**

Person sits on a frictionless stool that is free to try ate but is initially at rest. The person is holding a bicycle wheel (I = 3 kg*m2) that is rotating at 8 Ree/s in a clockwise direction as viewed from above, and the moment of inertia of the person-wheel-stool system is 9 ...

*Sunday, October 30, 2016 by Lester*

**physics**

quarterback throws a pass to a receiver, who catches it at the same height as the pass us thrown, The initial velocity of the ball is 15.0 m/s, at an angle of 25.0 degrees above the horizontal. How long is the ball in the air?

*Sunday, October 30, 2016 by matt*

**Physics**

William Tell must split the apple atop his son’s head from a distance of 45.1m. When William aims directly at the apple, the arrow is horizontal. At what angle must he aim it to hit the apple if the arrow travels at a speed of 45.956m/s

*Sunday, October 30, 2016 by Rose*

**PHYSICS URGENT URGENT URGENT URGENT HELP NEEDED!!!**

A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the numerical values of ...

*Sunday, October 30, 2016 by Valentina*

**Physics**

An Olympic long jumper is capable of jumping 8.44m. Assuming his horizontal speed is 5.644m/s as he leaves the ground, how high does he go?

*Sunday, October 30, 2016 by Liv*

**Physics**

You throw a 5.5 g coin straight down at 4.0 m/s from a 25-m-high bridge. A) How much work does gravity do as the coin falls to the water below? B)What is the speed of the coin just as it hits the water?

*Sunday, October 30, 2016 by Nathan*

**Physics**

A tennis ball, starting from rest at a height h = 2.10 m, rolls down the hill. At the end of the hill the ball becomes airborne, leaving at an angle of 27.0° with respect to the ground. Treat the ball as a thin-walled spherical shell (I = ⅔mr²), and determine the range...

*Sunday, October 30, 2016 by Bex*

**Physics**

a bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. if the mass of the bullet is 0.025kg and average resisting force of the wood is 7x 10^3 N , Calculate the sppeed of the bullet just before it hits the wood block

*Sunday, October 30, 2016 by busola*

**Physics**

You must arrange three mystical stones in a line. They have masses 10.0 kg, 7.00 kg,and 3.00 kg. You place the 7.00 kg and 3.00 kg stones 5.00 m apart. Where do you need to place the 10.0 kg stone for the center of mass of the three stones to be 2.25 m from the 7.00 kg stone ...

*Sunday, October 30, 2016 by Rick*

**Physics**

A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the numerical values of ...

*Sunday, October 30, 2016 by Michael*

**physics**

a point charge placed at the origin. Calculate eletric field at a point 2.0m from the Z axis.

*Sunday, October 30, 2016 by alisha ahmed*

**Physics (for Damon)**

Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m I have found the following: Spring constant: 63.7N It would take 576J to return the object to ...

*Sunday, October 30, 2016 by George*

**physics**

Calculate the freezing point of water at a depth of 10.0 cm below the surface of the water. The density of the water is 0.9998 g/cm3.

*Sunday, October 30, 2016 by Joseph*

**PHYSICS**

A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the ladder showing all ...

*Sunday, October 30, 2016 by Saphina AlMatary*

**PHYSICS**

A perfect gas at 415 degree centigrade. The volume remains constant at 20 cubic meters and pressure of 1750 Gauge. Calculate the final value of V2 AND T2

*Sunday, October 30, 2016 by Muhammad*

**maths physics**

A particle P, starting from rest at A, moves in a straight line ABCD. It accelerates uniformly at 5ms-2 from A to B. From B to C it travels at constant velocity, and from C to D it slows down uniformly at 4ms-2, coming to rest at D. Given that AB=10m and that the total time P ...

*Sunday, October 30, 2016 by nadun*

**physics**

An object is projected vertically in "V" velocity.After "T" time, another object is projected at the same place in same velocity("V").Find the velocities of stones when they meets.

*Sunday, October 30, 2016 by MAS*

**Physics**

A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the ladder showing all ...

*Sunday, October 30, 2016 by still don't understand; please help*

**physics**

Find the x and y components of A displacement 200km at 34

*Sunday, October 30, 2016 by abdirahman*

**Physics**

A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (a) Draw a diagram for the ladder showing all ...

*Sunday, October 30, 2016 by urgent help needed*

**physics**

a block B (m2 = 14 kg) is at rest on top of a table. Block B is connected to block A (m1 = 4.8 kg) and block C (m3 = 17 kg) by two strings that each pass over a frictionless pulley installed at the either end of the table. The horizontal surface of the table exerts a 32-N ...

*Sunday, October 30, 2016 by Amy*

**Physics**

Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m There are several questions I must answer from this. 1. What is the value of the spring ...

*Saturday, October 29, 2016 by George*

**physics**

A volume of 140 cm3 of an ideal gas has an initial temperature of 20°C and an initial pressure of 1 atm. What is the final pressure if the volume is reduced to 120 cm3 and the temperature is raised to 40°C?

*Saturday, October 29, 2016 by Sue*

**physics**

What is true about microscopic properties of an object? 1) They are just small versions of the macroscopic properties. 2) They are the properties of particles that make up the object. 3) They are the average of many properties of individual particles. 4) They are overall large...

*Saturday, October 29, 2016 by Heather*

**Physics**

Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m There are several questions I must answer from this. 1. What is the value of the spring ...

*Saturday, October 29, 2016 by George*

**physics**

Given that 1 g of hydrogen combines completely with 8 g of oxygen to form water, how much water can you make with 10 g of hydrogen and 24 g of oxygen?

*Saturday, October 29, 2016 by Beth*

**physics**

A ham sandwich consists of one slice of ham (9 grams) and two slices of bread (25 grams each). You have 1 kg of ham and 1.2 kg of bread. You make as many sandwiches as you can. How many sandwiches did you make? 1) How many sandwiches did you makd? 2) What is the mass of the ...

*Saturday, October 29, 2016 by Lisa*