# Physics!

73,755 results, page 49

### Physics

A stone is thrown vertically upward with a speed of 19.0m/s How fast is it moving when it reaches a height of 10.0m

### Physics

A car travels in a straight line for 4 h at a constant speed of 63 km/h. What is its acceleration? Answer in units of m/s^2?

### physics

Find the field produced by a uniformly charged sheet carrying 93pC/cm2 .

### Physics

What is the direction of force of friction on a bicycle on front and back wheel while paddling?

### physics

A body immersed in liquid has an upthrust of 140N with a density of 12kg calculate the velocity

### Physics

A car starts from rest and accelerates for 3.9 s with an acceleration of 5 m/s2 . How far does it travel? Answer in units of m

### physics

A meteoroid is speeding through the atmosphere, traveling east at 24.5 km/s while descending at 11.6 km/s. What is its speed, in km/s?

### Physics

What is the car's forward acceleration,at a speed of 30m/s,when the driving force on the wheels is 650N

### physics

A meteoroid is speeding through the atmosphere, traveling east at 19.5 km/s while descending at 12.7 km/s. What is its speed, in km/s?

### physics

calculate the linear momentum of a truck with a mass of 13065kg that is traveling at 36m/s eastward.

### Physics

a 52kg person riding a bike rotates her wheels in a circle of 17 cm what is her max tourque

### physics

Show that the magnitude of the charge on a capacitor is given by Q = (Qo(1-e^-(t/T))) and Q = Qoe^-(t/T) for charging and discharging, respectively.

### physics

With V = Voe^-(t/T), how many time constants does it take for a capacitor to discharge less than 1% of its initial voltage?

### physics

How much work does a student do if he throws a 0.750 kg ball with force of 45.0 N through a distance of 1.50 m?

### Physics

What is the kinetic energy of a 1100 kg sports car traveling down the road with a speed of 22 m/s?

### physics

What is the charge of a bare Magnesium nucleus (no electrons, just the protons and neutrons) in Coulombs?

### physics

on a cool night with no wind people facing a campfire feel a breeze on their backs. why?

### Physics

coin and a piece of glass are both heated to 60 degrees celsius which will be warmer when you touch it ?

### Physics

Why do some cooks put long aluminum nails through potatoes to be baked?

### Physics

coin and a piece of glass are both heated to 60 degrees celsius which will be warmer when you touch it ?

### Physics

Why do some cooks put long aluminum nails through potatoes to be baked?

### physics-

In a string and pulley problem, will friction increase or decrease the tension.can you please explain if you can?

### Physical Science

What are the noninvasive benefits of the medical technologies that rely on physics of elementary particles?

### PHYSICS

How is the evolution of animal like the long necked giraffe explained by Charles Darwin?

### physics

If a solid is stretched or compressed beyond the point that it can return to its original shape it has passed its

### physics

Write the equation for fill factor in terms of V_max, V_oc, J_max, and J_sc. FF =

### Physics

A bus slows down uniformly from 75 km/h to 15 km/h in 12.55 s. How far did the car travel before stopping?

### Physics

If an electron moves perpendicular to the same field with this speed,what is the radius of its circular orbit?

### physics

How much time does it take a pulse of light to travel through 180\({\rm {\rm m}}\) of water?

### physics

A body of mass 10kg in air and 4kg in water calculate the volume and its density

### Physics

A 1.25kg book in space has a weight of 8.35N. What is the value of the gravitational field at that location ?

### physics

Starting from the constant-acceleration kinematic equations, write a formula that gives xf in terms of t, xi, vf, and a.

### physics

a year ago she measured 98cm from her tree . now it 1.1m tall how much has it grown

### physics

a block of wood of 200g is thrown vetically with a veloncity of 20mls what is the pontential energy?

### physics

A car is moving down a highway at -15 m/s and accelerating at 3 m/s^2. If it's initial position is at x = 0 m where will it be after 3 seconds?

### physics

A driver drives 2.5 hours at an average speed of 48MPH. What distance does she travel in this time?

### physics

A driver drives 2.5 hours at an average speed of 48MPH. What distance does she travel in this time?

### Physics

Make a predictive statement about the path dependence of accelerations due to gravity

### Physics

A car accelerates from 12m/s to 25m/s in 6.0s. What is its uniform acceleration? How far did it travel in this time?

### Physics

If the fundamental frequency of an 70 cm long guitar string is 470 Hz, what is the speed of the traveling waves?

### Physics

Find the net force and the acceleration for the situation below. 30N 20N <---------------[ 5.1kg]---------->

### Physics

A person is travelling 6 km (E) then 4 km (N) and finally 2 km (W). Calculate the average speed And velocity. Show your work

### Physics

A 56 kg swimmer jumps off of 15 m tower. Find the swimmers velocity when hitting the water.

### physics-lenses

trace and describe the image formed by a convex lens (object between 2f and f)

### PHYSICS IMPULSE MOMENTUM QUESTION

what is a scenario in which REDUCING the time of impact would be beneficial?

### Physics

If you wish to warm 100 kg of water by 20° C for your bath, show that 8370 kJ of heat is required.?

### Physics

torque to move a block of m=200kg for 10m at an angle of 25 degree with a speed of 20m/s.

### physics

two vectors A and B each have magnitude 220 and angle BETWEEN THEM IS 120 WHAT WILL BE RESULTANT?

### Physics

I don't understand this question... What is the change in entropy for a system that has 250 J of heat added to it at 25°C? (Points : 1) 10 J/K 0.84 J/K 0.84 J/K 10 J/K

### physics

What are the principles behind seatbelts and air bags that make passengers safer in a collision?

### physics

explain the input energy and out put energies of two kitchen machines

### Physics

explain the input energy and out put energies of two kitchen machines

### physics

explain the input energy and out put energies of two kitchen machines

### physics

The mass of an iron cube having an edge length 1.8 cm is 70 g. Find itd density.

### Physics

If an object has a work of 300J and a displacement of 20m, how would I determine the net force?

### physics

a bus decreases its speed from 80kmh-1to 60kmh-1 in 5 sec find the acceleration

### PHYSICS

A point source of a wave emits 195 watts. What is the intensity at a distance of 4.56 meters? I =

### physics

Things around you are emitting infrared radiation that includes the wavelength 1.44 10-5 m. What is the energy of the photons?

### Physics

What is the partial pressure of water on a day when the temperature is 25C and the relative humidity is 33% P=___Pa

### Physics

A golf ball struck with an initial speed of 41.8m/s. What is the range of the shot if the launch angle is 30.0º?

### Physics

A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?

### Physics

8.2 kg of ice is taken from a temperature of -49 C into steam at 123 C. What is the energy used? Q_total =

### physics

What is the free-fall acceleration in a location where the period of a 2.87 m long pendulum is 3.4 s? Answer in units of m/s 2

### physics

The elastic potential energy of an object may be negative Select one: True False

### physics

if a train at 72kmphr is to be brought to rest in a distance of 200 m then its retardation is A 20m/s^2 b 10m/s^2 c 2m/s^2 d 1m/s^2

### physics

Find the work done by 2.32 moles of an ideal gas if its volume doubles at a constant temperature of 22.6°C.

### Physics

A 2.73 kg particle has a velocity of vx = 6.02 m/s and vy = 0.316 m/s. Find the magnitude of its total momentum. Answer in units of kg · m/s

### physics

How much force is needed to accelerate a 50kg rider and his 250kg motorcycle at 4m/s27

### Physics

if the mass of two balls is 0.300 kg each then what is the gravitational force between them if the distance is 0.3000 m

### physics

An aircraft on its take-off run has a steady acceleration of 3.0 m/s2. It's velocity after 10 seconds will be

### physics

what must be the mass of the log to be lifted up by the hand, if the muscle cross sectional area is 17 cm^2?

### physics

If you heat a thin circular ring in a oven, does the rings hole get larger or smaller.why?

### 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

Write down the unit in which reaction rate is measured in this observation? Equation is Zn(s)+I~ZnI

### Physics

What is the magnitude of the electric force between a proton and an electron when they are at a distance of 2.63 Angstrom from each other?

### physics

if the resultant of 2 equal force inclint to each other at 60° is 8root3N. Find the component forces?

### physics engg.

A deutron is moving with a speed of 2*10^8m/s. Find the wavelength of the matter wave associated with it?

### Physics

What electric field strength would store 17.5J of energy in every 9.00mm3 of space?

### Physics

Calculate the average speed (in km/h)of Larry, who runs to the store 3.6 kilometers away in 40 minutes.

### Physics

What is the peak current through a 400–W room heater that operates on 120–V AC power?

### Physics

How long does it take a vehicle with 40hp to achieve 25m/s(meters per second)?

### Physics

An object that starts from rest completes 7 revs in 3 seconds. What is angular accel. in rad/s2?

### Physics

If I dropped a bowling ball from the empyre state building, at what velocity would it descend?

### physics

A car travels in a straight line for 2.8 h at a constant speed of 53 km/h . What is its acceleration? Answer in units of m/s 2

### Physics

What is the minimum energy needed to change the speed of a 1600 kg sport utility vehicle from 15.0 m/s to 40.0 m/s?

### 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

### Math 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

### 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