206,551 results, page 53
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
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
700 kg plane is traveling at 90 m/s at altitude of 1500 m what is planes total mechanical energy
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:
A bus moves from rest with a uniform acceleration of 2ms(square)for the first 10s.
How can the equation be prove:maximum height,time of flight and maximun range in projectile?
What force F must be applied to the small piston to maintain the load of 49 kN at a constant elevation?
How high must your roof be to fire 1.2km if it fires at 450 m/s muzzle velocity?
a boy pulls a bucket of water of mass sky from a well of depth 10 cm calculate the work done ?
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
what should the ratio of mass to volume be when considering the flight of a hot air balloon.
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
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
A guitar string has a mass of 30g and length of 2m. Find the tension if its density is 0.2kg/m^3
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.
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?
a 50 gram object is accelerating at a rate of 5 m/s2. calculate the force needed to produce this acceleration
A guitar string 61.8 cm long vibrates with a standing wave that has three antinodes. Which harmonic is this?
. How much potential energy does the 2.5 kg rock sitting on an 18 –meter high cliff have?
how much heat is needed to raise the temperature of 5kg of silver from 20 degrees C to 96 decgrees C?
hummingbirds beat their wings 1500 times in 30seconds calculate frequency and the period
A 3kw engine operates for 3secs, 10kgf force is applied find the Displacement.
how much work is needed to stop a 20kg bullet moving with a speed of 150m/s?
How much is needed to melt an ice cube, 3 centimeters on each side at 0 degree celcius?
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.
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)
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.
When you jump vertically 0.86 meters above the ground, what is your acceleration when you reach your highest point?
A hypothetical planet has a mass 1.55 times that of Earth, but the same radius. What is g near its surface?
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?
If a man weighs 820N on d earth what would be on Jupiter, where the acceleration due to gravity is 25.9m/s
A radio station is broadcasting at 90.7 mhz. compute for its wavelength in angstrom and energy in kilojoules.
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?
Billy stands on a hill without slipping. In which direction is the force of friction acting?
1. Given t1/2 to be 0.0137 seconds, how long should it take to reach 87.5% of maximum charge?
how can we derive the work-energy theorem form Newton's second law of motion?
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
If the force of repulsion between two socks is .003 and they are 2 cm apart what is the charge on each sock
Solve the following ODE using the power series method (1-x^2)y"-2xy'+2y = 0
Obtain all the first and second order partial derivatives of the function: f( x, y ) = In(I+xy^2)
Solve the following ODE using the power series method (1-x^2)y"-2xy'+2y=0
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
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.?
a boy drops a mango from a tree it falls without rebound what happens to it's momentum
Two pellets, each with a charge of 1 microcoulomb, are located 3 cm apart. What is the electric force between them?
What is the velocity of an object that is dropped from a height of 20m,just before it reaches the ground?
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?
a ball of mass m is thrown vertically upwards with Vo= 10j m/s. Study nature of motion
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
Calculate the work done if a force of 300N Is applied at 30° to the horinzontal and body moves 20m
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.
how many energy is transferred when 8.9g of liquid hydrogen changes to gas -253 degree celsius
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.
A hypothetical planet has a mass 1.49 times that of Earth, but the same radius. What is g near its surface?
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!!
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
What accurate method can be used to determine the thickness of a coin. Explain pls..
Find the vector's magnitude and direction. Part A A⃗ = 4 i^− 8 j^ A =? θA =?
A student walks from her apartment a distance d=139m to the bus stop at a speed of v1= 1.40m/s.
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
prove the following rules if True or False using Boolean algebra (a)A+AB = A+B (b)(A+B)(A+C) = A+BC
Find the x-component of vector v⃗ = (310 m/s , 45 ∘ above +x-axis).
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
calculate the work done on n mole of a vander waal gas is an isothermal expansion from volume vi to vf.
A ball is released and allowed to fall freely. How far will it have fallen in 2 seconds?
A car is traveling North. In which direction are the wheels turning. This is under the torque chapter
A car is traveling North. In which direction are the wheels turning. This is under the torque chapter
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?
A tire rotates 140 rpm, how many rotations have been completed in 20 seconds?
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
How far above the surface of the earth would you have to be before your weight is reduced by 13.52%?
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?
What would be the orbital speed and period of a satellite in orbit 1.50 ✕ 10^8 m above the Earth?
2.An airplane flies north at a constant speed of 220 km/h. How far will the plane travel in 3.50 h?
how long does it take a car to change its velocity from 15m/s to 25m/s if it accelerates uniformly at 5m/s2.
What force is required to slide a 200 kg box up a 25 degree incline if the coefficient of friction is 0.60?
a beam of electron 13.0 ev is used to bombard gaseous hydrogen. what series of wavelengths will be emitted?
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.
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.
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)
the height of the mercury in the glass tube thermometer when in melting ice and then steam are 3 cm and 18 cm respectively
A car traveled 1000 kilometers from krui to Jakarta in 15 hours. What was its average velocity?
what is the potential energy of 4 point charges each of value Q at the corners of a square of side length a.
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
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
write down the dimensions of moment of inertia and surface tension coefficient.
How much work does a weightlifter do on a 450 N barbell thathe lifts 2m into the air
A ball is thrown straight up at 24.0 m/s. Ignore the effects of air resistance in your calculations.After 2.00 s?
A bullet fired vertically upwards reaches a height of 500m. [g=9.8m/s2]. What is its initial velocity?
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?
why do photoelectrons emitted from a metal surface has energy distribution for an incident radiation of frequency?
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
A rubber ball of mass 0.12kg is held at a height of 2.5m above the ground, and then released.
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)
How do you determine the correct value of angular velocity to use when calculating centripetal force?
If it takes an object 68 seconds to make 16 rotations, what would be the period of rotation? T=16/68 Is this right?
calculate the electrostatic force between charges of -2.4 µC and +5.3 µC, placed 58cm apart in a vaccum.
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
Determine the acceleration of an electron placed in a constant downward electric field of 4.0X10^5N/C.
It took a car driver 30min to travel a distance of 50km. What is the average speed?