# Math/Physics

215,554 results, page 46-
## Physics

Whatis the volume of a piece of iron (p= 7.9g/ cm cubed) that has a mass of 0.50kg? -
## physics

Why is it vital that there is friction thatb opposes motion when two surfaces try to slide across one another? -
## Physics

What is the size of the buoyant force on a 31.0 N ball that is floating in fresh water? -
## physics

what is the work done in moving a positive charge 12UC across two points 6cm apart -
## physics

Liquids exert pressure at Right Angles to the surface of container.Please explain this with an example -
## physics

A 5.0-g CD with a radius of 6.0 cm rotates with an angular speed of 20 rad/s. What is its kinetic energy? -
## physics

How far apart must two protons be if the electrical force of repulsion acting on either one is equal to its weight. -
## Physics

If a shoe is dropped from a height of 40m, what is its speed after falling for two seconds? -
## physics

A 5.0-g CD with a radius of 6.0 cm rotates with an angular speed of 20 rad/s. What is its kinetic energy? -
## physics

explain why a child on a swing comes to rest directly below the top of the swinng -
## physics

If a nuclide has a decay constant of 10^-6 s-1 what is its half life ??? I think it is 0.693 / 10^-6 = 693000 or 6.93 x 10^5 Is this right ... -
## physics

a horse walks 56 meters in 75 second. what is his average velocity?show the work -
## physics

What is the mass of an object that requires a force of 65N to accelarate it at a rate of 13 m/s2? -
## Physics

what 2 properties of carbon make it a good material to use for motor brushes? -
## physics

How much work in joules must be done to stop a 5000 kg car traveling at 120 km/hr? -
## PHYSICS

A hypothetical planet has a mass 1.49 times that of Earth, but the same radius. What is g near its surface? -
## physics

How much work is required to stop an electron (m = 9.11 10-31 kg) which is moving with a speed of 2 106 m/s? -
## physics

find the moment of inertia of the earth. Radius is 6,000 km and mass is 6 x 10^24 kg -
## physics

which of acceleration age speed temperature and velocity are vector quantities -
## physics

A bus that is traveling at 31.0 km/h, speeds up at a constant rate of 3.7 m/s2. What velocity does it reach 6.8 s later? -
## physics

A particle at rest undergoes an acceleration of 2.9 m/s2 to the right and 2.6 m/s2 up. What is its speed after 5.3 s? Answer in units of m/s -
## physics

A 0.355-kg object undergoing SHM has ax = 2.30 m/s2 when x = 0.235 m. What is the time for one oscillation? -
## physics

why are the lengths of days in spring and autumn the same? if the sun does not set, why is it so cold? -
## physics

What is the mass of an object that requires a force of 65N to accelerate it at a rate of 13 m/s2? -
## physics

need the formula to find jupiters orbital period in earth years -
## Physics

Explain how you would determine how much error there is between a vector addition and the real results. -
## Physics

Determine the escape velocity at a location 2.5*10^4km from the surface of Jupiter -
## physics

if you jump upward with a speed of 2mls, how long will it take before you stop rising? -
## Physics 30

A frictionless pulley (a 2.0 kg is on the floor while the 3.0 kg is 0.5m high) . when released, momentum of the 2kg is? -
## Physics

A 125 ball has a kinetic energy 33.6 What is the magnitude of it's momentum? What is the speed? -
## PHYSICS

A car speeds up at 5m/s if the driver was already moving at 7m/s find his velocity after 3 seconds -
## Physics

1) Please describe the typical path(s) for hurricanes. Is this part of the pattern of convection? -
## Physics

What are the components of a vector of magnitude 1.5 m at an angle of 35 degrees from the positive x-axis? -
## physics

A 0.255kg rock is thrown with a speed of 12.0m/s.How much energy does it initally passess? -
## physics

define the term parallax anf and state 2 ways of reducing it -
## physics

into which part of the fridge-freezer will the rate of heat transfer be greater? -
## physics

Two insulating spheres with charges of -7.0 μC and -12 μC, are located 10.0 cm apart. What is the force between them? In what direction does it act? -
## physics

What must be the magnitude of the force of static friction between the surface and the bottom of the crate? -
## Physics

1.A Speed Of A Bullet Of Mass 20g Is 200km/h. What Is The Kinectic Energy. -
## physics

what is the average velocity of a vehicle that uniformly accelerates from rest to 38 fps? -
## Physics

a sled is capable of reaching speeds of 450 m/s in 1.82 s then stopped in 1.92 s what is the acceleration -
## physics

5. An object that has kinetic energy must have A) momentum. B) acceleration. C) a force applied to it. D) All of these. E) None of these. -
## physics

What voltage is applied to the 5.00 µF capacitor of a heart defibrillator that stores 35.0 J of energy? In kv. -
## physics

To the nearest tenth of a Joule, what is the total energy of the pendulum in problem 2? -
## physics

How much heat is absorbed by an electric refrigerator in charging 2 Kg of water at 15°C to ice at 0°C? -
## physics

what is the relationship between independent and dependent variables in the experiment of snell's law -
## Physics

Describe how you can determine the specific heat of an unknown metal whose mass is known. -
## physics

Find d electrostaticforce of a q1 to other charges.express ur answer as magnitude n direction -
## Physics

what is the schwarzschild radius of a black hole with a mass of 1.68x10^43kg -
## Physics

How much energy (in cal) is required to raise the temperature of 15.0g of isopropyl alcohol from 10.0 C to 25.0 C? -
## Physics

I've read all my resource materials and looked for outside resources already and i can't find an equation for this. I would appreciate any help -
## physics

find time it takes for a sprinter to accelerate from rest to 10 m/s. If acceleration is 4.0 m/s sq. -
## Physics

A 74.0 kg firefighter climbs a flight of stairs 12.0 m high. How much work is required? -
## Physics

calculate K.E in Joules of a baseball w/ a mass of 237.2 cg moving at 85.00 mph -
## Physics

Describe how surface area and volume are related in solids? Give an example. -
## physics

What is the length of a box in which the difference between an electron's first and second allowed energies is 1.30×10−19 ? -
## physics

If the slope in the above problem is 48 degrees, what is the coefficent of friction (to 2 decimal places)? -
## physics

what is the gravitational potential of a 2kg book that is on a shelf 2 meters off the ground? -
## physics

What is the effect of increasing the inclination of the track to the acceleration of the rider in the experiment? -
## Physics

What’s the specific heat of a material if it takes 6.5 kJ to increase the temperature of a 1.8 kg sample by 6.4 ∘C ? -
## physics

determine the magnitude of the centripetal force that acted on the whirling ball?? -
## Physics

The period of revolution of a satellite is 90min. What is the altitude above the surface of the earth? -
## physics

find the acceleration produced by a net force of 300.0 N on a mass of 0.75 kg. -
## agric,physics,life sciences ,pure maths

can i be an agricultural engineer -
## PHYSICS

At what angle should you launch a projectile from the ground so that it has the greatest time of flight? -
## physics

a particle which has zero rest mass and non zero energy and momentum must travel with a speed? -
## physics

What would be the orbital speed and period of a satellite in orbit 1.50 ✕ 10^8 m above the Earth? -
## physics

You throw a ball straight up at 25 m/s. How many seconds elapse before it is traveling downward at 13 m/s? -
## physics

How much heat is needed to raise the temperature of 2kg of water to 10K? -
## Physics

If a ball were to fall off a 180cm table,how fast would it be going halfway to the ground? -
## Physics

How long is Mayra, a ballerina, in the air when she leaps straight up with a speed of 1.23 m/s? -
## physics

The sensitivity of a galvanometer of resistance 990ohm is increased by 10 times.The shunt used is?? -
## Physics

An object moves with acceleration given by a = -6t^3 m/s^2. Its initial velocity at t = 0 is 5 m/s. How far will it move before stopping? -
## Physics

An object moves with acceleration given by a = -6t^3 m/s^2. Its initial velocity at t = 0 is 5 m/s. How far will it move before stopping? -
## physics

how do you find the magnitude of the net force if you have 2 forces acting on an object: 8.4 N[S] and 7.5 N[E] -
## physics

A gas occupies 20 dm³at 30°c at 2.5 atm find its volume ayt s.t.p. -
## Physics

If a car accelerates from rest to 15 m/s for a distance of 200 m. What is the magnitude of acceleration? -
## physics

How much heat does 25g aluminum give off as it cools from 95celsius to 30celsius? -
## physics

What would the gravitational potential energy be if the bucket were raised six times as high? -
## physics

What is the electric field intensity of a point 15cm from a charge 15microcoulomb -
## Science: Physics

A circle graph has labeled segments of 5.7%, 21%, 13, and 6%. What % does the unlabeled segment have? -
## physics

In a CD, the characteristic that is given in binary is the wave of which of the following? A) amplitude B) None of these.C) quality.D) speed.E) frequency. -
## physics

A projectile is given an initial velocity of (i + 2j) m/s, where i is along the ground and j is along the vertical. If g = 10 m/s2, the equation of its trajectory is: -
## physics

How much charge passes through a cross-sectional area of a copper wire in 0.8 s if I = 3.5 A? 1 C -
## Physics

Does the velocity of a model rocket increase or decrease when the parachute is deployed? -
## Physical Science

What are three medical technologies that rely on the physics of elementary particles? -
## Physics

Find the attractive force bet a 50 kg girl and a 60 kg boy, if they stand 2.00 m apart. -
## physics

the minute hand of a large clock is 2 m long. what is its mean angular speed? -
## physics

find the impulse on a baqseball that is hit 80N of force in a time of 0.52 s -
## Physics

How do I find tangential speed with just radius, time and angular acceleration? -
## Physics pls help

At what depth in water is the pressure equal to 2m atmosphere. Explain how -
## physics

if r1=2ohms, r2=4ohms, r3=6ohms. Then what is the voltmer reading connected in series -
## Physics

I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it -
## Physics

A person with a mass of 85kg. How much in newtons do they weigh on the earth and the moon? -
## physics

a 1200 kg car goes from 15m/s in 16s. What is the average force acting on it? -
## physics

Fall time under g is sqrt 2h/g. Can someone give a derivation from the equations of motion please? Thanks. -
## physics

A carton of juice remains intact even after you have sucked out all the drink from it. please explain -
## physics

explain examples of physical laws used during the Apollo 13 mission to get it home -
## physics

What is the wavelength of an X-ray photon with energy 6.0 (6000 )? (Hint: 1 = 1.60 10-19 joule.)? -
## physics

what is the wavelength of an X- ray photon with energy 10 keV?(10,000eV)? what is the frequency?