# Math/Physics

209,467 results, page 42

### physics

You are driving a car with a power output of 56,000 Watts. How many seconds will it take to go from 0 m/s to 27 m/s?

### physics

The density of a solid ball with a mass of 231 g and a volume of 110 cm^3 is ____ g/cm^3.

### Physics

if the frequency of a particular electromagnetic wave is 4 x 10^14 hertz, what is its wavelength of the radiation in nanometers (nm)?

### Physics

What is a node? i'm supposed to label the nodes in a diagram of a wave but i can't find it anywhere

### physics

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

### Physics

If a +q charge is placed at d in the x-axis (x_0<d), what happens to the total electric field in 1?

### physics

how much work is done by an engine using 105 watts of power in 3.2 seconds?

### Physics

If a +q charge is placed at d in the x-axis (x_0<d), what happens to the total electric field in 1?

### physics help!

The displacement of an object is given by y = (4.6 cm) sin 28ðt. (a) What is the amplitude? (b) What is the frequency? (c) What is the period?

### physics

Find the electric field at the folowing radii from the center of this charge configuration.

### physics

if V = (10x-10y)i + 30k find pressure change between points (0,0,0) and (3,1,0)

### physics

What is the value of the gravitational acceleration at a height of 2000 km above the surface of the Earth?

### physics

If a coffee can has a radius of 63.0 cm and a height of 15.8 cm find its volume round to neaerest cm3

### physics

The third longest wavelength in the Paschen series in hydrogen corresponds to what transitions?

### physics

In LCR series AC circuit when does the effective voltage lag behind the current?

### physics

At what speed should an object be projected to reach the maximum range of 200 m ?

### physics

what are the two forces that affect the motion of a child as she comes down a slide?

### physics

What is the wavelength of the peak of the blackbody radiation curve for the human body (T = 310 K)?

### Physics

How much energy is deposited in the body of a 78 kg adult exposed to a 2.9 Gy dose? Please and thank you.

### Physics

What is the acceleration of a proton moving with a speed of 4.3 m/s at right angles to a magnetic field of 2.1 T?

### physics ---- really dnt get this at all

Will the photoelectric effect change for different targets

### physics

How will the current in a wire change as the wavelength of light changes? I have no idea how to do this.

### physics

How will the current in a wire change as the wavelength of light changes? I have no idea how to do this.

### physics

find the maximum voltage that can be applied to a 8 kohm resistor rated 0.50 Watt?

### physics

find the maximum voltage that can be appliedto a 8 k ohm resistor rated 0.50 watt?

### physics

find the maximum voltage that can be applied ti 8 k ohms resistor rated 50 Watt?

### physics

How high could one horse raise a 100N weight (10kg) in 1 second?

### physics

a suitcase weighs 30 kg wt.everytime i weigh it on a spring balance,the reading is different.WHY?

### Integrated Physics and Chemistry

The ____ motion of a star can be determined by studying its spectrum

### Physics

What is the resistance of a 4.00 m length of copper wire having a diameter of 2.00 mm at a temperature of 20 degrees?

### physics

How will changing the distance change the electric field strength for a given charge?

### physics

how can you say that thickness of a material varies as it is a constant value. discuss with in 50 words.

### Physics

How do you make a Balloon Car? Is there another way accept just blowing it up and letting it go?

### physics

where would the image of a 4.0 cm tall object that is 12 cm in front of a flat mirror be located?

### physics

What Net Force is necessary to give a 2.0 kg mass initially at rest an acceleration of 5.0 m/s^2?

### physics

the speed of a bullet of mass is 40gram is 216km/h what is the kinetic energy in joule

### physics

expressions for the force experienced by the charge when it enters the magnetic field at an angle?

### Physics

In the photoelectric effect, what happens to the stopping voltage when the light frequency is decreased?

### physics

how is the position of a particle moving along a straight line described by a number

### physics

Which of :acceleration,age,speed,temperature,and velocity are vector quantities? Are any of them scalars?

### physics

A car travels in a straight line for 3.7h at a constant speed of 63 km/h. What is the acceleration? Answer in m/s^2

### Physics

The electric field at the surface of a uniformly charged sphere of radius 6.0cm is 90 kN/c .

### physics

A particle at rest undergoes an acceleration of 2.5 m/s^2 to the right and 3.2 m/s^2 up. What is its speed after 5.9s? Answer in m/s

### PHYSICS

When you have more pulleys does the mechanical advantage and efficiency increase or decrease?

### physics

before ice can form on a lake, all the water must be cooled to?

### physics

Calculate the quantity of heat required to raise the temperature of 2.00 g of water 4.00◦C.

### physics

A tuning fork produces a wave at 280 Hz and with a wavelength of 1.5 m. Calculate its velocity.

### Physics

As a rocket accelerates upward, its thrust remains constant but its acceleration increases. what is the cause of this?

### physics

What's the speed of the Hubble telescope when it is in orbit 598 km above the earths surface?

### physics

What's the speed of the Hubble telescope when it is in orbit 598 km above the earths surface?

### Physics

Question: When a balloon is rubbed with fur, it becomes negatively charged. Explain why?

### physics

A distance runner moves at a constant pace of 4.1m/s. how far (in m) does he move in 30 minutes?

### physics

stone dropped from a tower if steady wind blows in the horizontal direction

### physics

Start from the origin and go east for 80km. Then go north 192 km. Make a drawing.

### physics

what happens when a resistor is used to heat a brass rod and allowed to cool?

### physics

Two vectors A and B are added. Show that the magnitude of the resultant cannot be greater than A+B or smaller than l A-B l.

### Physics

Two point charges, +3.09 µC and -5.65 µC, are separated by 1.19 m. What is the electric potential midway between them

### Physics

A motorist travels 90 km at 120km/h , and 70km at 75km/h . What is the average speed for the trip?

### physics

A baseball goes from zero to 40 m/s in 0.206 s. What is its average acceleration? Answer in units of m/s2

### physics

if a 1 kg rock is thrown at a speed of 20m/s, how much kinetic energy does it have?

### physics

if a ball is thrown into the air at a speed of 22 m/s what is its position after 2.8 seconds?

### Physics

Does an object still possess any kinetic or potential energy at absolute zero?

### physics

A bus that is traveling at 35.0 km/h, speeds up at a constant rate of 3.4 m/s2. What velocity does it reach 6.8 s later?

### physics

Two point charges, +4.00 ìC and -7.00 ìC, are separated by 2.20 m. What is the electric potential midway between them?

### Science: Physics

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

### physics

What is the kinetic energy of a car of mass 1900 kg moving at a constant speed of 21 m/s

### physics

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

### physics

a car starts from rest and accelerates for 7.8s with an acceleration of 2.3 m/s squared. how far does it travel

### physics

A bus slows down uniformly from 79.6 km/h (22.1 m/s) to 0 km/h in 15 s. How far does it travel before stopping?

### physics

Any object that moves through the air (or space) under the influence of gravity is...?

### physics

If a car moves at 36km/h accelerate uniformly at 4m/s calculate it velocity in 2 seconds.

### physics

Name two factors that dertermine the quality/timbre of a musical note.

### physics

Name two factors that dertermine the quality/timbre of a musical note.

### physics

a plane stops from 250 mph in 25 seconds. Calculate the planes acceleration

### physics

A project is fire at angale of 45 with x-axis with the K.E 100J what is its K.E energy at maximum height?

### 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

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

### physics

Discribe the phase change that took place in the solid between the time t1 and t2?

### physics

A man walks 15m north then 20m at 32° E of N and then 11 m at at 15° S of W determine his net displacement

### physics

A man walks 15m north then 20m at 32° E of N and then 11 m at at 15° S of W determine his net displacement

### physics

True or false, the acceleration of an object and the net force acting on it are proportional.

### PHYSICS

Two vectors and have magnitude A = 2.90 and B= 3.00. Their vector product is A X B= -4.91 + 2.08. What is the angle between A and B?

### physics

A 62.0-kg runner has a speed of 4.90 m/s at one instant during a long-distance event.

### Physics

Two point charges, +3.90 ìC and -7.50 ìC, are separated by 3.30 m. What is the electric potential midway between them?

### physics

The Earth moves toward you through what distance? (Assume the seat is 45.0 cm high.)

### physics

Find the resultant of two vectors 7N and 8N inclined at an angle of 65 degree to each other

### Physics

At what projection angle will the range of a projectile equal to 5 times its maximum height?

### physics

is it possible to launch satelite whìch rotates just above kathmandu?

### physics

what is net force acting on the ball after attaning terminal velosity?

### physics

a bag weighing 9.4kg is dropped 1m onto concrete, what is the impact force in kg

### physics science

if you wish to warm 95 kg of water by 20.0c for your bath how much heat is required

### physics

a 1540 kg truck is traveling at 95 km/hr. what average force is required to stop in 10 seconds

### Physics

When a quarter, a nickel, a penny, and a dime are flipped; what are each of their revolutions per minute?

### physics

Determine the normal force for a laundry basket with a mass of 4.3 kg in each of the following situations

### physics

explain why air moving over an object can increase its rate of cooling.

### physics

What is the total force on the bottom of a swimming pool 20.5 m by 8.0 m whose uniform depth is 2.1 m?

### physics

what is the force of gravity on a mass of o.5kg hanging by a string in a beaker of water

### physics

What is the downward force on a ball with a mass of 7.5 x 10^-1 kg thrown in the air due to gravity?

### Physics

By what distance must two charges of +2 C and +10 C be separated so that the repulsive force between them is 3.70*10^10 N?