# Math/Physics

206,551 results, page 53

### Physics

A 0.50 kg hammer is taken on a space mission. What is its weight on a planet where the acceleration due to gravity is 3.8 m/s2? 0.50 kg 1.9 kg 0.50 N 1.9 N

### physics

A car travels in a straight line for 3.9 h at a constant speed of 63 km/h. What is its acceleration? Answer in units of m/s2

### Physics

700 kg plane is traveling at 90 m/s at altitude of 1500 m what is planes total mechanical energy

### physics

A dart is thrown horizontally toward X at 30 m/s as shown. It hits Y 0.29 s later. The distance XY in centimeters is:

### physics

A bus moves from rest with a uniform acceleration of 2ms(square)for the first 10s.

### physics

How can the equation be prove:maximum height,time of flight and maximun range in projectile?

### physics

What force F must be applied to the small piston to maintain the load of 49 kN at a constant elevation?

### physics

How high must your roof be to fire 1.2km if it fires at 450 m/s muzzle velocity?

### physics

a boy pulls a bucket of water of mass sky from a well of depth 10 cm calculate the work done ?

### physics

Calculate the velocity of a skateboarder who accelerates from rest for 6.7 seconds down a ramp at an acceleration of 6.5 m/s2

### physics

what should the ratio of mass to volume be when considering the flight of a hot air balloon.

### physics

A 4.53 kg particle has a velocity of vx = 3.98 m/s and vy = −3.16 m/s. Find the magnitude of its total momentum. Answer in units of kg · m/s

### Chemistry Physics

What is the wavelength of an electromagnetic wave with frequency 50.0 MHz? Am I starting this problem like this? 3.00*10^8/50*10^6 =6*10^12

### Physics

A guitar string has a mass of 30g and length of 2m. Find the tension if its density is 0.2kg/m^3

### Physics

I don't understand how to do this : A force of 40 N accelerates a 7.17 kg block at 6.0 m/s2 along a horizontal surface. Determine the normal.

### Physics

A 4.26 kg block starts up a 33.0 degree incline at 7.81 m/s. How far will it slide if the coefficient of kinetic friction is 0.23?

### physics

a 50 gram object is accelerating at a rate of 5 m/s2. calculate the force needed to produce this acceleration

### physics

A guitar string 61.8 cm long vibrates with a standing wave that has three antinodes. Which harmonic is this?

### Physics

. How much potential energy does the 2.5 kg rock sitting on an 18 –meter high cliff have?

### physics

how much heat is needed to raise the temperature of 5kg of silver from 20 degrees C to 96 decgrees C?

### physics

hummingbirds beat their wings 1500 times in 30seconds calculate frequency and the period

### Physics

A 3kw engine operates for 3secs, 10kgf force is applied find the Displacement.

### Physics

how much work is needed to stop a 20kg bullet moving with a speed of 150m/s?

### Physics

How much is needed to melt an ice cube, 3 centimeters on each side at 0 degree celcius?

### Physics

Find the magnitude of the sum of two forces, one 24 N and the other 9 N, when the angle between them is 60.0o.

### physics

find the resistance of 134m of No.20 copper wire at 20 degrees C (p=1.72x10^-6Ohom cm , A= 2.07x10^-2 cm ^2)

### Physics

Assume the distance axis is linear and da = 10.0m and db = 35.0 m. Estimate the work done by a force F in moving a 2.80 kg object from da to db.

### Physics

When you jump vertically 0.86 meters above the ground, what is your acceleration when you reach your highest point?

### PHYSICS

A hypothetical planet has a mass 1.55 times that of Earth, but the same radius. What is g near its surface?

### Physics

What is the capacitance of a capacitor that stores 5.2 μC of charge on its plates when a voltage of 4.8 V is applied between them?

### physics

If a man weighs 820N on d earth what would be on Jupiter, where the acceleration due to gravity is 25.9m/s

### physics

A radio station is broadcasting at 90.7 mhz. compute for its wavelength in angstrom and energy in kilojoules.

### Physics

A football player kicks with a speed of 21 m/s at 37 degree to the horizontal. How long is the ball in the air?

### Physics

Billy stands on a hill without slipping. In which direction is the force of friction acting?

### Physics

1. Given t1/2 to be 0.0137 seconds, how long should it take to reach 87.5% of maximum charge?

### physics

how can we derive the work-energy theorem form Newton's second law of motion?

### physics

What is the magnitude and direction of an electric field that exerts a 4.00 ✕ 10 -5 N upward force on a - 1.80 µC charge? N/C

### Physics

If the force of repulsion between two socks is .003 and they are 2 cm apart what is the charge on each sock

### mathematical physics

Solve the following ODE using the power series method (1-x^2)y"-2xy'+2y = 0

### mathematical physics

Obtain all the first and second order partial derivatives of the function: f( x, y ) = In(I+xy^2)

### mathematical physics

Solve the following ODE using the power series method (1-x^2)y"-2xy'+2y=0

### Physics

a 475 kg pre-stressed concrete beam is to be raised 10.0 m in 24.0 s. how many kw of power is needed to for the job

### physics

two point charge q1=50c , q2=10c are lactated at (-1,1,-3)m, and (3,1,0)m, respectivly. Find the force on q1.?

### physics

a boy drops a mango from a tree it falls without rebound what happens to it's momentum

### Physics

Two pellets, each with a charge of 1 microcoulomb, are located 3 cm apart. What is the electric force between them?

### Physics

What is the velocity of an object that is dropped from a height of 20m,just before it reaches the ground?

### Physics

In an AC circuit with a frequency 25 Hz producing an rms voltage of 30 V and a 20 farad capacitor, what is the end current?

### physics

a ball of mass m is thrown vertically upwards with Vo= 10j m/s. Study nature of motion

### physics

14,0 of KOH is neutralised in 1dm^3 of water by sulphuric acid with a concentration at 0,1 mol dm^-3 how do i calculate it

### physics

Calculate the work done if a force of 300N Is applied at 30° to the horinzontal and body moves 20m

### Physics

What is the tension in the string in (Figure 1) ? The volume of plastic ball is 95 cm3 and the density is 840 kg/m3.

### physics

how many energy is transferred when 8.9g of liquid hydrogen changes to gas -253 degree celsius

### Physics 2

If water at 0 oC is heated, it actually decreases in volume until it reaches Select one: a. 1 oC. b. 2 oC. c. 3 oC. d. 4 oC. e. 5 oC.

### PHYSICS

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

### Physics-PLEASE HELP

A man walks for 5 km/hr for 1 km and 7 km/hr for next 1 km. What is his average speed for the walk of 2 km? -5.8 km/hr -6.0 km/hr -2.0 km/hr -1.0 km/hr Thank you very much!!

### Physics

A car travels in a straight line for 2.9 h at a constant speed of 77 km/h . What is its acceleration? Answer in units of m/s^2

### physics(measurement)

What accurate method can be used to determine the thickness of a coin. Explain pls..

### Physics-VECTORS

Find the vector's magnitude and direction. Part A A⃗ = 4 i^− 8 j^ A =? θA =?

### Physics

A student walks from her apartment a distance d=139m to the bus stop at a speed of v1= 1.40m/s.

### Physics

Q: A car travels in a straight line for 4.6 h at a constant speed of 95 km/h . What is its acceleration? Answer in units of m/s 2

### University physics

prove the following rules if True or False using Boolean algebra (a)A+AB = A+B (b)(A+B)(A+C) = A+BC

### Science - Physics

Find the x-component of vector v⃗ = (310 m/s , 45 ∘ above +x-axis).

### physics

A football is kicked with an initial velocity v=9i+12j. Find the speed in (m/s) of the ball after 2.4s A) 9.2 B) 10.8 C) 12 D) 15

### physics

calculate the work done on n mole of a vander waal gas is an isothermal expansion from volume vi to vf.

### Physics

A ball is released and allowed to fall freely. How far will it have fallen in 2 seconds?

### Physics

A car is traveling North. In which direction are the wheels turning. This is under the torque chapter

### Physics

A car is traveling North. In which direction are the wheels turning. This is under the torque chapter

### physics

Two identical charges, each -8.00 x 10-5 C, are separated by a distance of 25.0 cm. Find the electric force between them?

### physics

A tire rotates 140 rpm, how many rotations have been completed in 20 seconds?

### physics

a term is related as at=bt2 + ct3 +d,if 'a' has dimension of power,find the dimention of 'b','c' and 'd'......'t' is the time

### Physics

How far above the surface of the earth would you have to be before your weight is reduced by 13.52%?

### Physics

An automobile is traveling 50 km/h². It deccerate at 5 m/s², how far will it take to travel after the brake are applied?

### physics

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

### Physics

2.An airplane flies north at a constant speed of 220 km/h. How far will the plane travel in 3.50 h?

### Physics

how long does it take a car to change its velocity from 15m/s to 25m/s if it accelerates uniformly at 5m/s2.

### physics

What force is required to slide a 200 kg box up a 25 degree incline if the coefficient of friction is 0.60?

### physics

a beam of electron 13.0 ev is used to bombard gaseous hydrogen. what series of wavelengths will be emitted?

### Physics 1100

Find theta; and W in the figure below where w1 = 21.0 N, w2 = 34.0 N, and α = 64.0°, assuming that the arrangement is at rest.

### physics

What is the magnitude of F? Assume the acceleration due to gravity is 9.8 m/s 2 and the surface is frictionless. Answer in units of N.

### physics

2.) A sports car is advertised to be able to stop in a distance of 50m from a speed of 90 km/h. What is its acceleration in m/s^2? How many g's is this (g=9.80 m/s^2)

### physics

the height of the mercury in the glass tube thermometer when in melting ice and then steam are 3 cm and 18 cm respectively

### physics

A car traveled 1000 kilometers from krui to Jakarta in 15 hours. What was its average velocity?

### physics

what is the potential energy of 4 point charges each of value Q at the corners of a square of side length a.

### 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

### physics dimensions

the displacement of a particles is given by S=A+Bt+Ct^2.deduce the values of the constant A,B,and C appearing in the equation

### physics dimension

write down the dimensions of moment of inertia and surface tension coefficient.

### Physics

How much work does a weightlifter do on a 450 N barbell thathe lifts 2m into the air

### Physics

A ball is thrown straight up at 24.0 m/s. Ignore the effects of air resistance in your calculations.After 2.00 s?

### Physics

A bullet fired vertically upwards reaches a height of 500m. [g=9.8m/s2]. What is its initial velocity?

### Physics

A truck starts from rest and accelerates at 2.0 m/s² for 4.0 s. How far will it have gone at the end of this time?

### Physics

why do photoelectrons emitted from a metal surface has energy distribution for an incident radiation of frequency?

### Physics

What would the experimental value of g be if the slope of the graph represents 1/2 g and the equation is y=5.00x-.0109639087

### Physics

A rubber ball of mass 0.12kg is held at a height of 2.5m above the ground, and then released.

### physics

Find the time constant (T) for the RC circuit with an open switch given t = 10 ms 50% of Qmax charge T = ? Q = CV (1-e -t/T)

### Physics

How do you determine the correct value of angular velocity to use when calculating centripetal force?

### Physics

If it takes an object 68 seconds to make 16 rotations, what would be the period of rotation? T=16/68 Is this right?

### physics

calculate the electrostatic force between charges of -2.4 µC and +5.3 µC, placed 58cm apart in a vaccum.

### physics

determine the thrust produced if 1.5 x 10^3 kg of gas exits the combustion chamber each second, with a speed of 4.00 x 10^3 m/s

### Physics

Determine the acceleration of an electron placed in a constant downward electric field of 4.0X10^5N/C.