A student drops a pebble from the edge of a vertical cliff. The pebble hits the ground 4 s after it was dropped. What is the height o the cliff? A E. No answer B A. 20 m В. 40 m D. 80 m E) с. 60 m

Q: The contestant now pulls the block of ice with a rope over his shoulder at the same angle above the ...

A:

Q: A ball is thrown straight upward and rises to a maximum height of 20m above its launch point. At wha...

A:

Q: A car accelerates uniformly from rest and travels a distance of (100 ± 1) m. If the acceleration of ...

A: Given that:- s=(100±1)ma=(6.5±0.5)m/s2u=0v=?    

Q: A horizontal force of magnitude 32.1 N pushes a block of mass 3.91 kg across a floor where the coeff...

A: Here, we calculate the given as follow;

Q: f 200 joules of energy were used in 0.1 second, how many kilowatts of power were used?

A: It is given that                  Energy consumed (E) = 200 joules                  Time(T) = 0.1 s

Q: Figure 22-32 shows two harged particles on an x axis: -q = --3.20 x 10-19 C at x = -3.00 m and g= 3....

A:

Q: If a wave strikes a surface with an angle of 37 degrees with respect to the normal, what is the angl...

A: The answer is below

Q: Directions: Using GRESA format, Illustrate and solve the following problems in a short bond paper. E...

A:

Q: A circular loop in the plane of the paper lies in a 0.60 T magnetic field pointing into the paper. T...

A: Magnetic field = 0.6T Resistance of coil = 1.55Ω Initial diameter=20.5cm Final diameter=9cm Time =0....

Q: 5. Which of the following statements concerning motion graphs is correct? a. The slope of a velocity...

A: None of the given statement is correct about motion graphs

Q: A virus can be modeled as a 50-nm-diameter sphere. Viruses, like biomolecules, are charged. A typica...

A: GivenDiameter of sphere(d)=50 nmVirus has charge(q)=-300eion concentration =150mM 

Q: An elevator and its load have a combined mass of 1600 kg. Find the tension in the supporting cable w...

A:

Q: Two blocks are attached to one another by a rope that passes over a frictionless pulley as shown in ...

A:

Q: The wind power is increased by a factor of 8, by doubling the wind velocity. Prove the statement.

A: Since, it is known that wind power(P) is directly proportional to the cube of wind velocity(V). Henc...

Q: An engine has a hot reservoir that contains 20,000 J of heat energy at 3270 C, and a cold reservoir ...

A:

Q: 1.12 When a bicycle rider is traveling at a speed of V = 24 mph, the power P she needs to supply is ...

A: In this question we have to find the power and the energy for the rider. Please give positive feedba...

Q: 6) The graph in the figure shows the position of a particle as it travels along the x-axis. x (m) 4....

A: This is a x(m) - t(s) graph which is also called as position time graph.  As the body is moving on x...

Q: The figure shows a block of mass M hanging at rest. The light wire fastened to the wall is horizonta...

A: Given that:- Mass of block=M kg

Q: n situation (2), give the direction of a by naming either a quadrant or a direction along an axis. (...

A: IN situation (2) which is shown in the figure below  This gives the vectora→, either quadrant or a ...

Q: A 5.6-kg box slides a distance of 13.0-m. If the coefficient of kinetic friction is 0.33, what is th...

A: The given data   The mass of the box m = 5.6 kg The distance moved by the box is d = 13 m The kineti...

Q: A freezer sustains a cold environment of -32°C and exhausts its heat at 39°C. Assume a Carnot cycle....

A: The given data   The initial temperature T1 = -32°C = -32+273 = 241 K The final temperature T2 = 39°...

Q: A mass of 70 g is attached at one end of a rod, and a mass of 30 g is attached at the other end. If ...

A: A mass of 70 g is attached at one end of a rod, and a mass of 30 g is attached at the other end and ...

Q: A force of 10 N is applied horizontally to a block. Also, a second force of 8 N is applied at angle ...

A: Given that:- F1=10 NF2=8 Nθ=450  

Q: Three charges are placed at the vertices of an equilateral triangle of side equal to 10 cm. The char...

A: ​.872Nat an angle of 330o

Q: When a 10,000-m runner competing on a 400-m track crosses the finish line, what is the runner’s net ...

A: Since, it is given that 10,000 m runner race on a 400 m track. Hence, number of cycles(n) to complet...

Q: A 39 kg girl and a 7.7 kg sled are on the frictionless ice of a frozen lake, 10 m apart but connecte...

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Q: The moment of a force about a point is equal to the sum of the moments of the components of the forc...

A:

Q: please write full solution including the formulas used. QUESTION: How many electrons is needed to pr...

A:

Q: A truck goes around a curve, the radius of which is 1/2 mile. The truck will tip over if its normal ...

A: Given that               The radius of the curve is (r) = 12mile               The normal component ...

Q: 2- The total energy of electron in the fourth orbit is (-0.85 ev). Find the kinetic energy and Poten...

A: Given : Total energy of the electron in the fourth orbit is (-0.85 eV)

Q: You saw a posted speed limit at an intersection that is 55 miles per hour (or mph), what is this spe...

A: Given that :- V=55 mph Hence, following conversion units will be used to convert the given speed to ...

Q: Page 4 of 4 Guide Questions: 1. In the illustrations above, which shows greater acceleration when th...

A:

Q: A spiral staircase in a building is in the shape of a helix of radius 5 meters. Between two floors o...

A: We know that   A spiral staircase in a building is in the shape of a helix of a radius of 5 meters. ...

Q: A roof tile falls from rest from the top of a building. A man inside the building notices that it ta...

A:  Time taken to pass the window  =0.2s  Height of window =1.8m We have to find How far above the top ...

Q: A single strand of wire of adjustable length is wound around the circumference of a round balloon th...

A:

Q: 4) A car travels for 2 hours at 5 m/s and for 20 minutes at 8 m/s. What is the average speed for thi...

A:

Q: 12. Determine the acceleration of a pterodactyl who is initially moving at 25 m/s [E 37° S], making ...

A:

Q: Explain the difference between the force of gravity and the acceleration due to the force of gravity...

A: The force of gravity is the force acting on the cotton ball towards the centre of the earth If m is ...

Q: A 1100-kg car is moving at 20 m/s due north. A 1600-kg car is moving at 19 m/s due east. The two car...

A: Here, we calculate the given as follow,

Q: The following graph shows position versus time for a car. Which of the statements below best describ...

A: We have a position vs Time graph of the car. here in the graph, we show the four rZone A, B, C, and ...

Q: east-west and are 35 miles apart. The west man spots a tornado at bearing N43°E and the east man spo...

A:

Q: 9) What is the total initial acceleration of a tether ball on a 2.0 m rope whose angular velocity ch...

A: Given, Initial angular velocity, ωi = 13 radsfinal angular velocity, ωf = 7.0 radstime taken, t = 15...

Q: 1. How do you describe an atom in terms of composition?

A:

Q: What is the relationship between Orbit Velocity of Satellite and Escape Velocity?

A:   Orbit Velocity = VO Escape Velocity = VE  

Q: A transformer has 110 loops on the primary side and 880 on the secondary.... A. If you have 6.7V as...

A:

Q: In a wire with a 2.17 mm² cross-sectional area, 7.19 × 1020 electrons flow past any point during 3.0...

A:

Q: A parallel-plate capacitor is connected to a battery. The energy of the capacitor is Uo. The capacit...

A: Since you  have asked multiple questions , we will answer you the first question. Kindly repost the ...

Q: (a) In which situations does the object's acceleration have an x component? 7 N 수6N 2 N 3 N 2N 5 N 2...

A:

Q: A car is traveling at an initial speed of 15 m/s. It then speeds up with a constant acceleration of ...

A: Given that:- u=15 m/sa=2 m/s2t=15 secv=?

Q: 8. 5.0 moles of an ideal gas that occupies a volume of 30 L at a temperature of 30°C undergoes an is...

A: Given value--- Number of mole = 5. initial volume = 30 L. final volume = 20 L. Temperature = 30 deg...

Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.