Two children are throwing a ball back-and-forth straight across the back seat of a car. The ball is being thrown 10 mph relative to the car, and the car is travelling 30 mph down the road. If one child doesn't catch the ball and it flies out the window, in what direction does the ball fly (ignoring wind resistance)? _________________________   degrees, measured relative to the car's forward direction

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Q: WITH FRICTION Find minimum and maximum mass of ml to maintain the system in state of equilibrium; at…

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Q: Which of the following statements is true? The magnitude of the electrostatic force exerted…

A: Required:- Which statement among the following is correct.

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Q: A 15 kg block sliding horizontally across the floor has a coefficient of static friction of μs =…

A: We have a block of mass m=15 kg which is sliding across a floor with a initial velocity u=4.2 m/s…

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Q: Frequency and wavelength are related by the speed of light. c = Xv So we can solve for the frequency…

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Q: Star A has a temperature of 5,000 K and Star B has a temperature of 6,000 K. At what wavelengths (in…

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Q: A 71.9 Kg mass is placed on an incline plane that is 38 degrees from the horizontal. a) Assuming…

A: Given Information:- Mass is m=71.9 kg Angle of inclination of the incline plane is θ=38° Length of…

Q: 21) When a current flows through a metal wire, the moving charges are A) both protons and electrons.…

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Q: 1.10 m long is closed at one end. A stretched wire is placed near the open end. The wire is 0.329 m…

A: Given-  Length of tube , L = 1.10 m  Mass , m = 9.50 g = 9.5×10-3 kg  Length of wire , Lw = 0.329 m…

Q: Two identical lightbulbs are connected in series to a single 9.0 V battery. a. Sketch the circuit.…

A: Given,  The bulbs are identical.  Voltage of battery = 9 V

Q: Select all the pairs of analogous quantities involved in the analogy between Newton's 2nd law for…

A: Newton's second law for rotation,  ∑  τ  = I α , says that the sum of the torques on a rotating…

Q: A closed surface with dimensions a = b= 0.208 m and c = 0.3328 m is located as in the figure. The…

A: Putting values of α and β in expression of electric field,I obtain E=5+6x2 Total Electric flux is…

Q: A 58.1-kg skateboarder starts out with a speed of 2.03 m/s. He does 108 J of work on himself by…

A: Given:- Wp= work done by the person due to pushing with his feet against the ground. = 108 J Wf=…

Q: A force of 15N acts on a body of mass 2kg. Calculate the acceleration produced. A 7.5 ms 2 B 30 ms 2…

A: Given data,        Force  =   F        Mass   =  m      To find,          Acceleration

Q: A bag of wheat weighs 4 kg. To what height should it be raised so that potential energy is 12 J?…

A: Given data,    Acceleration due to gravity  =  g    Potential energy  =  P.E    Mass of the bag  =…

Q: Monday Tuesday or Challenge Wednesday A hydroelectric power station has an upland reservoir that is…

A: Height (h) = 400 m Power (P) produced = 96 MW efficiency = 60 %

Q: Magnetic dip' results from the tendency of a magnet to align itself with lines of force. The range…

A: At equator, the magnetic dipole will allign along the horizontal.

Q: 18) Two isolated copper plates, each of area 0.40 m², carry opposite charges of magnitude 7.08 x…

A: The correct answer is option B Potential difference = 8 V

Q: An object hangs from a spring balance. The balance registers 32 N in air, 22 N when this object is…

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Q: Is there a use for the photoelectric effect in the real world?

A: Yes , there are many uses of photoelectric effect in real world , such as :- Solar pannel a series…

Q: The electrical force between two objects is 36 N. If the charge on one of the objects is doubled AND…

A: Given data:  Electric force (F) = 36 N New charges q1' = 2q1 and q2' = q2 New distance between the…

Q: Calculate the change in entropy of 1.0 kg of lead when it cools from 500 °C to 100 °C. Take Cp,m=…

A: mass of lead (m) = 1 kg initial temperature = 500o C final temperature = 100o C Cp = 26.44 Jk-mol

Q: 4) A small charged plastic ball is vertically above another charged small ball in a frictionless…

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Q: Two identical masses are inside a smooth hemispherical bowl with radius R, the position of each mass…

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Q: Learning Task. The cat runs toward the mouse for food at different speed. Given the data below,…

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Q: What are the practical applications of the photoelectric effect?

A: 1. Photo electric effect is mainly used in Solar cells, which is non-conventional energy in which…

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Q: What are the practical applications of the photoelectric effect?

A: Photoelectric effect phenomenon in which electrically charged particles like electrons are released…

Q: Do you know how much strain the rope must bear in order to accelerate an automobile that weighs 960…

A: Dear student The relation between force and acceleration is given by: F = ma

Q: A 56 kg tight rope walker takes a break when walking across a tight rope. The angle θ in the picture…

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Q: 44. (I) A thin 12-cm-long solenoid has a total of 460 turns of wire and carries a current of 2.0 A.…

A: Length of the solenoid, l=12 cm Number of turns, N=460 turns Current through the solenoid,i=2 A

Q: A long non-conducting cylinder has a charge density p= ar, where a = 5.58 C/m¹ and r is in meters.…

A: in this question we use simple Qenclosed  of long tube then find electric field at various place.

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Q: Two long parallel wires are separated by a distance 10 cm and carry the currents of 3 A and 5 A in…

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Q: A sky diver jumps from a "perfectly good" plane. Prior to opening their parachute they fell 625 m in…

A: Given data:  Distance traveled before opening parachute (d1) = 625 m, downward Time taken (t1) =…

Q: ow much heat is required to raise the temperature of 70 g of water from 20°C to 80°C

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Q: You're in an elevator standing on a bathroom scale. The bathroom scale reads the normal force that…

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Q: A force of 15N acts on a body of mass 2kg. Calculate the acceleration produced. A 7.5 ms 2 B 30 ms ²…

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Q: Which one of the arrows shown in the figure best represents the direction of the electric field…

A: Given As shown in figure , upper plate is positively charged and lower plate is negatively charged .…

Q: An automobile is travelling at 60km/h. calculate the angular velocity of the 0.35m radius wheels

A: Given data:  Speed (v) = 60 km/h Radius (r) = 0.35 m Required: Angular velocity (ω)

Q: A car travels 240 km in 6 hours. Find the average speed of the car in km/h?

A: Given data,     Distance  =   d     Time  =   t         To find ,          Average speed of the car

Q: Three charges are arranged on x-axis : q2 = + 4 uC is at x=0 , q1 = - 3 uC is at x=0.2 m ,  and  q3…

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Q: A car travels 240 km in 6 hours. Find the average km/h? speed of the car in

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Q: At a carnival, you can try to ring a bell by striking a target with a 9.05-kg hammer. In response, a…

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Q: . Find the current delivered by 10 V battery using mesh analysis in the figure shown in Figure1 1A 个…

A: First we convert the current source to a equivalent voltage source. Then we calculate the current…

Q: Do you know how much strain the rope must bear in order to accelerate an automobile that weighs 960…

A: Dear student According to 2nd law of newton, the relation between force and acceleration is given…

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –