3. A block of 90 kg rests on a horizontal surface. The coefficient of static friction between the block and the supporting surface is 0.50. Calculate the force P required to cause motion to impend if the force applied to the block is (a) horizontal, (b) upward at an angle of 20o with horizontal (answer: 441.45 N; 344.6 N)

Q: A boy toss a coin and the coin reaches its maximum height at 1.5s. From this point, how long would i...

A: Given data:  Tossing a coin in upward direction Time taken to reach maximum height (t) = 1.5 s Requi...

Q: The free-fall acceleration vector can be described in terms of x and y components. True False

A: When a object falls under the force of gravity ,This motion is called free fall

Q: In the figure shown below, the coefficient of kinetic friction under the box A is 0.25. Box A has a ...

A:

Q: 10. Find the smallest angular velocity for a rotating ball-shaped big molecule (see, e.g. Figure 1, ...

A:

Q: 3.Water is flowing in a pipe that has varying cross-sectional area throughout, and at all points the...

A: Continuity equation is the basically conservation of mass for fluid moving in the pipe. Density x Ar...

Q: A motorcycle traveling at a speed of 36.0 mi/h needs a minimum of 41.0 ft to stop. If the same motor...

A: The stopping distance is the distance covered between the time when the body decides to stop a movin...

Q: assume you are a perfect black body and Temp=310K. At what rate, in watts, do you radiated energy? (...

A: Solution:-

Q: A coaxial cylinder of length L = 5 m consists of two cylindrical shells of radii a = 15 cm and b = 2...

A:

Q: 2. You are driving your car to province when mosquito splatters on the a windshield.Which has a grea...

A: Given data: There is a collision between the car and mosquito, and mosquito splattered.

Q: An object has a charge of 1 Coulomb. How many electrons does it contain? Show your calculation.

A:

Q: 9. You tie a cord to a pail of water, and you swing the pail in a vertical circle of radius 0.600m. ...

A:

Q: A “sandwich” is constructed of two flat pieces of metal (2.00 cm × 3.00 cm) with a 4.00-mm-thick pie...

A:

Q: Part A It was shown in Example 21.11 (Section 21.5) in the textbook that the electric field due to a...

A:

Q: Seatwork Time! 1. On His way to the city, Cardo Dalisay travelled a path of 100 m North, 150 m E, 25...

A:

Q: A car battery has an emf of 12.0V. You connect a light bulb across its terminals that have a resista...

A: Emf (V) = 12 V Resistance (R) = 12 ohm  

Q: A car starts from rest, then accelerates at a constant rate over a distance of 70 m. It then immedia...

A:

Q: 2. While driving down a road in your car that has a mass of 1300 kg, you notice that your speed is 2...

A: Given that:- Mass of car=1300kg

Q: 1- An aorta has an inside diameter of 1.6 cm and carries blood at speeds of up 30 cm/s. What is the ...

A:

Q: A boat can move at a constant velocity of 2.0 m/s in still water. How long will it take for the boat...

A:

Q: A force of 8N acts of a 5kg object for 10 sec. What is the object's change in momentum? What is the ...

A: According to Newton's second law of motion,              F = ∆pt here            ∆p is the change in...

Q: A spacecraft starts from rest, and makes a journey to a destination 447000 km from its starting poin...

A:

Q: A 45 g golf ball leaves the tee with a speed of 43 m/s after a golf club strikes it. What work was d...

A:

Q: A boy throws a ball with an initial velocity of 25 m/s at an angle of 30 above the horizontal, If ai...

A: Here, we calculate the given as follow;

Q: The resultant of three vectors is 90.00 cm 34° N of W. If two of these three vectors are 17.89 cm 27...

A: Given, Resultant of three vectors, R = 90.00 cm at 34° N of W two vectors,  A→ = 17.89 cm 27° W of S...

Q: What is the electric field at the midpoint Mof the hypotenuse of the triangle shown below? M 29 a

A:

Q: 3. Let's imagine that the earth is shrinking and we want to escape before it is too late. Let's set ...

A:

Q: Calculate the magnitude of the electric field at a point that is 30cm from a point charge Q=3.2x(10)...

A:

Q: A 27 g arrow is shot horizontally. The bowstring exerts an average force of 75 N on the arrow over a...

A:

Q: At the same depth of a swimming pool and Dead Sea from equal surface level, which of the following i...

A: Depth is same for both swimming pool and dead sea let the depth be d

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A: Given: The speed of the cyclist. 1. double 2. triple

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A:

Q: A 7-Kg man stands on a bathroom scale in an elevator. What does the scale read it the elevator is de...

A:

Q: range

A:

Q: Three point charges are located at the corners of an equilateral triangle as in the figure below. Fi...

A:

Q: A point is located in a polar coordinate system by the coordinates r = 5.4 m and ? = 16°. Find the x...

A: Given that:- In polar coordinates, Point P(r,theta) where r=5.4m and theta=16°

Q: A rectangle has a length of (2.8 ± 0.2) m and a width of (1.7 ± 0.2) m. Calculate the area and the p...

A:

Q: Two charges separated a distance of 1.0 meter exert a 6.0-N force on each other. If the charges are ...

A: We know that Force between two charge particles is given by F= 1/(4π€o)}(q1q2/r²) So, F∝1/r² Where r...

Q: A 12.6 V source of emf does 12.6 joules of on each coulomb of that passes through it. O Work, Charge...

A: When a charge q moves from one point to another point and the potential difference between this two ...

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A:

Q: Express your answer in two decimal places What is the final velocity of the car, if it starts fro...

A: Given data:  Initial velocity (Vi) = 0 m/s Distance traveled (d) = 75.0 km = 75000 m Acceleration (a...

Q: 3. Three-point charges are in an x-y plane. Charge 1 has a charge of 11.2 mC, charge 2 has a charg o...

A:

Q: 2. A charge qi = +3.00 µC is placed at the origin of an xy-coordinate system, and a charge q2 = -4.0...

A:

Q: boy throws a baseball onto a roof and it rolls back down and off the roof with a speed of 3.05 m/s. ...

A:

Q: 4. A 75.0kg wrecking ball hangs from uniform heavy-duty chain having a mass of 26.0kg. Find the maxi...

A:

Q: A small drop of water at 27 deg celcius is in contact with the air and has a diameter of 0.7mm. If t...

A:

Q: What is the buoyant force of olive oil (ρ = 920 kg/m3) if the volume of the oil displaced is 0.024 m...

A: Given: Density (ρ ) = 920 kg/m3   Volume ( V) = 0.024 m3

Q: 0.05 Q 10. Given the circuit, solve for the 0.2 Q a. Total resistance 0.1 Q b. Total curent 12 VE 1....

A: The equivalent of two resistance R and r in series is given as R+r . And in parallel it is given as ...

Q: A car starts from rest and reaches a speed of 48 m/s in 15 seconds. The acceleration increases from ...

A: Given  speed of 48 m/s in 15 seconds In  t=0 to t=6 acceleration increase linearly And t=6 to t=15se...

Q: From the window of a building, a ball is tossed from a height y0 above the ground with an initial ve...

A:

Q: A jet must reach a speed of 75m/s for takeoff. How long is the runway if the acceleration is 15 m/s?...

A: We have givenFinal speed of Jet (v)=75 m/sAcceleration (a)= 15 m/s2 

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: