World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has a magnitude of 15 m/s2. How much horizontal force must a 55-kg sprinter exert on the starting blocks during a start to produce this acceleration? Which body exerts the force that propels the sprinter: the blocks or the sprinter herself?

Q: Water flows through a hose of diameter 2.50 cm at a speed of 535 cm/s. Find the flow rate Q of the h...

A: Given data: Diameter d = 2.50 cm Speed v = 535 cm/s

Q: Supposed to static charge of 0.23 uC moves from your finger to a metal door knob in 1.15 ms. What i...

A:

Q: When an object is 43.0 cm from a concave mirror, it creates a magnification of -0.350. At what dista...

A:

Q: A red blood cell typically carries an excess charge of about -2.5 × 10-12 C distributed uniformly ov...

A:

Q: Q) A person with severe myopia has a far point (a). (20cm) What is the strength of contact lenses (w...

A:

Q: A metal blade spins at a constant rate of 5.0 revolutions per second about a pivot through one end o...

A: Given data: The number of revolution in 1 second is n=5 rev. The magnetic field is B=30 μT. The len...

Q: Part A In a double-slit experiment, the fringe spacing on a screen 100 cm behind the slits is 4 mm. ...

A: Write the given data. d=4 mmD=100 cm

Q: hat is the orbit radius of a satellite around Earth that has an orbit period of 24 hours?

A: Time period of satellite revolving around Earth is given by T =2πr3GM   -----------(1) where r is ra...

Q: Q4: An automobile, travelling at 40 km/h, can be stopped at a distance of 40 m by applying brakes. I...

A:

Q: A beam of light that consists of a mixture of red, green and violet light strikes a prism (surrounde...

A:

Q: A block of glass has an index of refraction equal to n_g=1.68. The glass is surrounded by oil which ...

A: Given that:- Refractive index of glass=1.68

Q: 09: A person trying to lose weight by burning fat lifts a mass of 10 kg up to a height of 1 m 1000 t...

A:

Q: block A supporting another block B is pulled along a rough horizontal plane by a horizontal force P....

A:

Q: What value must C have to produce resonance at 30.2 kHz ? An LRC circuit has L = 3.46 mH and R = 5.4...

A: GivenL= 3.46 mH =3 ×10-3 HR = 5.40 kΩ = 5.40 × 103 ΩResonance frequency (ν) = 30.2 kHz =30.2 × 103 H...

Q: A mixture of blue light (wavelength of 400 nm) and red light (wavelength of 630 nm) falls on a (tran...

A:

Q: A knife is dropped from the top of a 14.0 m high mast on a ship moving at 1.74 m/s due south. (a) Ca...

A: we use the formula , v2-u2=-2gh

Q: Find the water pressure (in kPa) at the 25.0-m level of a water tower containing water 50.0 m deep

A:

Q: One second is defined as the time it takes for the radiation from a Cesium – 133 atom to  complete 8...

A:

Q: In a car lift used in a service station, pressure is transmitted by an incompressible liquid from a ...

A: Given(s): The radius of the small piston, r1=5.00 cm The radius of the bigger piston, r2=15.00 cm T...

Q: In a car lift used in a service station, pressure is transmitted by an incompressible liquid from a ...

A:

Q: A cicular segment of radius 10 cm, subtends an angle of 60° at the centre. A current of 9 Ampere is ...

A:

Q: An object is found orbiting the sun at a distance of 70 AU what is the objects orbital period? A. 2...

A: Solution: Given: 1 AU = one astronomical unit = 1.496 x 1011 m 1 year = 3.156 x 107 s  G = gravitati...

Q: An angle's terminal ray sweeps out 198 degrees, then an additional 2.5 radians.  a) this angle swee...

A:

Q: Assume an ideal apparatus and refer to this diagram for the next two questions.

A:

Q: An object of mass 10.0 kg hangs from two ropes attached to the ceiling as shown.  What are the tensi...

A: In question number 1. Please include diagram.

Q: Question 17 The primary coil of a transformer has 100 loops and is connected to a circuit with 120 v...

A: Concept

Q: Determine the moment of inertia of a 10.8-kg sphere of radius 0.648 m when the axis of rotation is t...

A:

Q: Calculate the impedance of the circuit if the source frequency is 35 Hz . A 94 N resistor and a 8.0 ...

A:

Q: The ball is kicked from a ground level with an initial velocity of 10 m/s at an angle of 30 degrees ...

A:

Q: In the figure, an electron moves at speed v = 110 m/s along an x axis through uniform electric and m...

A: Lorentz force(F), the force exerted on a charged particle q moving with velocity v through an electr...

Q: Use the worked example above to help you solve this problem. A proton moves with a speed of 1.28 x 1...

A: Given: particle : protonq = +1.6*10-19 Cv = 1.28*105 m/s B =59.1 μT=59.1*10-6 T

Q: Two different sources emit electromagnetic waves with 10 meters in wavelength. If you place a detect...

A: Conditions:  For constrictive interference : Path difference of two wave should be an integral multi...

Q: The gravitational force of a star on an orbiting planet 1 is F1. Planet 2, which is four times as ma...

A:

Q: A spring (k = 200 N/m) is compressed 0.05m. This spring is then released and accelerates a mass of 2...

A: Part 1) The work done by the spring is equal to the elastic potential energy stored by the spring du...

Q: A railroad car having a mass of 13 Mg is coasting at 1.5 m/s on a horizontal track. At the same time...

A:

Q: The highest possible efficiency of an engine operating between temperatures of 11 oC and 215 K is __...

A:

Q: A 5.50 cm tall object is 24.0 cm from a concave mirror with f = 20.0 cm. Find the image distance.

A: object distance from concave mirror, u = 24 cm focal length , f = 20 cm height of object, h = 5.5 cm

Q: n ice-making mạchine operates in a Carnot cycle. It takes heat from water at 0.0 °C and rejects heat...

A:

Q: 1. Suppose you have a 12.0 V motorcycle battery that can move 5000 C of charge, and a 12.0 V car bat...

A:

Q: Show your work wherever possible. Record all answers with THREE DIGITS. O PROBLEMS 1 Block 1 with ma...

A:

Q: What will be acceleration of a body of mass 7 kg if a force of 420 N is applied to if ?

A:

Q: 1. Find the magnetic field at point P for the steady current shown in the picture on the right. R

A:

Q: Find the resistance if the current is 3-5 amperes and the voltage is 35 W

A: Given, Current across the resistance, I = 3.5 AVoltage, V = 35 V

Q: A submarine on a spy mission is 107.5m horizontally out from the shore and 211.8m beneath the surfac...

A: The situation is shown in figure

Q: When an object is 43.0 cm from a concave mirror, it creates a magnification of -0.350. What is the f...

A:

Q: A convex grocery store security mirror has a focal length of -0.500 m. A 1.50 m tall person stands 2...

A:

Q: A ball is thrown straight upward with an initial speed of 34 m/s. Assuming no air resistance, how mu...

A: Given data:  Initial velocity (v0) = 34 m/s, straight upward Air resistance is negligible Required: ...

Q: In Young's experiment, two slits are 0.2 mm apart. The interference fringes for light of wavelength ...

A:

Q: A tube is open only at one end and has a length of 1.5 m. This tube sustains a standing wave at its ...

A: Given data: The length of tube is L=1.5 m. The harmonic of wave is m=3.

Q: A ray of light passes from air into a block of glass with a refractive index of 1.50 as shown in the...

A:

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: