A man is exerting a constant 150 N horizontal force to push a 20 kg wooden crate upwards along a rough 30-degree ramp. The coefficients of non-sliding (static) and sliding (kinetic) friction are 0.2 and 0.1, respectively. The push is sufficient to move the crate up the ramp.   a. Which of the following best approximates the amount of frictional force between the crate and the ramp? b. Which of the following best approximates the magnitude of the acceleration (in m/s2 ) of crate?

Q: the clif, (b) the speed of the stone just before impact at A, and (c) the maximum height Hreached ab...

A:

Q: A projectile is shot upward at a 60º angle with the ground and a speed of 200 m/s. (a) Obtain the ve...

A:

Q: P, P2 3 10 11 12 13 14 15 16 17 12'-0" TYP. Use the diagram shown above. Given • P- 100 # • P- 400 •...

A:

Q: Consider a circuit shown in the figure. Ignore the internal resistances of the batteries. A) Expres...

A:

Q: The human heart is a powerful organ. If your heart can take in and discharge about 6773.2 liters of ...

A: Given Volume of blood , V = 6773.2 L  Density of blood , D = 1.06 kg/L  Height lift ,H = 1.7 m  Time...

Q: What is the entropy change of 15 g of steam at 100°C when it condenses to water at the same temperat...

A:

Q: The radius of a modern wind turbine is usually 55 m long. If the blade rotates at 11.291 revolutions...

A: radius of turbine , r = 55 m angular speed of the blade, ω=11.291 rev/min = 11.291 revolutions60 sec...

Q: A particle travels along a horizontal path where its velocity is defined by v = 2t2 - 4t where t is ...

A: Given that:v=(2t2-4t)  m/stime interval is 0 to 3 sec

Q: A proton is released from rest in a uniform electric field. The proton is accelerated and directed e...

A: Since the proton is accelerated in the direction of the east, the net force on the proton is also di...

Q: If an car went from a red light to a green light so basically he stoped at the red light then go at ...

A:   If an car went from a red light to a green light so basically he stopped at the red light then go ...

Q: Two capacitors, 4.7 microF and 5.6 microF, are connected in parallel. If a 9 volt battery is to be c...

A:

Q: Problem 8. Two loudspeakers on a concert stage are vibrating in phase. A listener is 50.5 m from the...

A:

Q: A bumper car with mass m1 = 110 kg is moving to the right with a velocity of v1 = 4.8 m/s. A second ...

A:

Q: 9. An object undergoes SHM and position as a function of time is presented by the following formula:...

A:

Q: A motorcyclist performs uniform circular motion on a globe of death with a radius of 4.00 m. It has ...

A: Given, Radius of globe of death ,r = 4.0 m  Speed ,v = 10.9 m/s  Mass = 200 kg  g = 10.0 m/s2  

Q: A 2kg box slides down a ramp a distance of two meters before it reaches the ground. The ramp has an ...

A: Drawing the Normal force and the direction of the movement of the box,

Q: Question 1 The range of a projectile is directly proportional to its A angle of projection B initial...

A: According to question we need to define range of projection ?

Q: A motorcycle and 48.5 kg rider accelerate at 2.4 m/s² up a ramp inclined 10° above the horizontal. (...

A:

Q: This diagram can be used to indicate that: A The object is at rest or the object is decelerating The...

A: The given diagram indicate that

Q: What is the magnitude of an electric field in which the force on an electron is equal in magnitude t...

A:

Q: A 0.15-kg baseball is thrown with a speed of 10 m/s. How much more momentum does it have if its spee...

A: The momentum of a body is given by p= mv, where m = the mass of the body v = the velocity of the bod...

Q: (a) Compute the electrical energy used by a household whose monthly electrical bill is $34, computed...

A:

Q: From the graph of the motion shown, which of the following statements is correct?

A: The velocity and position are related as v = dxdt, where x denotes the position of the body dxdt is ...

Q: A force of 169.81N is applied to a 105.29kg box across a surface. What is the acceleration of the bo...

A: Force ( F ) = 169.81 N  Mass ( m ) = 105.29 kg  Time ( t ) = 17.46 s   

Q: When you are swimming what can you notice about your body weights?

A: To explain : the body weight experienced by the swimmer while swimming

Q: At a top of a building, a projectile is launched with an initial velocity of 25.0m/s at an angle of ...

A:

Q: Given the diagram each with each point charge +Q as shown, determine the electric potential at the o...

A: The electric potential due a point charge at a distance is given by V = kQr, where k = Coulomb's con...

Q: what two angels of elevation will enable a projectile to reach a target 13km downrange on the same l...

A: Given  Range = 13 km = 13000 m Initial speed = 424 m/sec

Q: While driving along the highway at 40 m/s, you spot a police car ahead, traveling at a constant spee...

A: Giveninitial veloity ,u=40 m/sFinal velocity ,v=30 m/sDeacceleration, a=-1.0 m/s2

Q: 1. A 70.3-kg water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the ...

A:

Q: ains in the air for 6.00 s after it is fired. The horizontal component of its velocity is 100 m/s. (...

A: We know that the formula of the projectile motion is given as  we know that formula of flight time a...

Q: Light reflected from the front surface of a dense flint windowpane (n = 1.655) has an intensity I1. ...

A: Given data as per question n = 1.655

Q: Consider the following matrices: 0. 1. 3. C =4 5 8 9 A = 2 0. 1 B = 6. 1 1 0. .7 1. Add the matrices...

A:

Q: A system of very long conductors (Total length I) consists of an inner cylinder of radius a and a th...

A: Consider the gaussian surface of the differential element of radius r (a < r < b), width dr, a...

Q: A 3.02 resistor is connected to a non-ideal source with internal resistance r = 1.0N and EMF E = 16 ...

A: Given data :- R = 3 ohm r  = 1 ohm EMF E = 16 V Reading of voltmeter V' = 12 V

Q: In the given network, each capacitor has C = 4uF and Vab = 28V. Calculate the potential difference o...

A:

Q: e direction of the magnetic field that produces the magnetic force shown on the currents in esch of ...

A: Direction can be determined by Fleming left hand rule it states that If we arrange the thumb, the ce...

Q: (3p.) Figure below shows a cross section of a hollow, cylindrical conductor of radii a and b, carryi...

A:

Q: A PERSON PUSHES A CART OF MASS 25 KG WITH A FORCE OF 50 NEWTONS TO MOVE IT ON A HORIZONTAL SURFACE.....

A:

Q: A spring stretches 0.40 m when a 2.0 kg mass is hung from it. The spring is stretch an additional 0....

A:

Q: What can you conclude about the effect of varying launch angles to the properties of a projectile?

A:

Q: Constants Part A A 15.0 kg block is attached to a very light morizontal spring of force constant 325...

A:

Q: hade three equipotential surfaces between the parallel plates below.

A:

Q: A capacitor is composed of 2 plates separated by a sheet of insulating material 2mm thick and of rel...

A:

Q: 15. What is the length of a simple pendulum if it oscillates with a period of 2 s? A) 2.0 m B) 1.0 m...

A:

Q: A person shoots an arrow at an angle of 60 degrees above the horizon, where the arrow is 1.8 meters ...

A: The equation of projectile is given as y = xtanθ -gx22u2cos2θ........................(1) where θ is ...

Q: The value of numerical aperture of the objective lens of a microscope is 1.25. If light of wavelengt...

A:

Q: An automobile starts from rest and reaches a speed of 42 m/s in 15 seconds. The acceleration increas...

A:

Q: You have a pulley 13.9 cm in diameter and with a mass of 1.3 kg. You get to wondering whether the pu...

A: Given data:

Q: A CAR MOVED FROM REST AT POINT A AND ACCELERATED UNIFORMLY AT A RATE OF (2 METERS PER SECOND SQUARED...

A: Given: The itnial velocity of the car is 0 m/s. The acceleration of the car is 2 m/s2. The distance ...

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: