A 0.145 kg baseball is pitched at 42 m/s to the right. The batter hits it horizontally to the pitcher at 58 m/s.

Q: Thin strips of iron and zinc are riveted together to form a bimetallic strip that bends when heated.…

A: Answer: A. It has a higher coefficient of linear expension zinc has a higher coefficient of linear…

Q: 7. The coefficient of static friction between the block of 2 kg and the table shown in figure is μ =…

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Q: Suppose object C is in thermal equilibrium with object A and with object B. The zeroth law of…

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Q: Calculate the momentum of a car having mass 340 kg moving with a velocity 42 m/s

A: Given data :                   Velocity     =    v                   Mass      =     m           To…

Q: 1. A 5000kg block rests on a column (Y=20x109 Pa), with a diameter of 10cm. What is the compressive…

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Q: An electron entered an area with a uniform magnetic field 45 mT (directed out of the page) with a…

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Q: Where is correct position of the object if the position of the image is at F creating a real image…

A: Image will formed at F only when object is at infinity.

Q: The laws of reflection: a. are only obeyed for flat reflecting surfaces b. are obeyed during…

A: To explain : The laws of reflection are valid for what kinds of surface ?

Q: SOLUTION IS NEEDED How much total energy in Joules is generated in a machine gear if its temperature…

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Q: A 5.00-cm tall light bulb is placed a distance of 55.5 cm from a concave mirror and the image formed…

A: Focal length = 20.5cm object  distance u = 55.5cm object height = h0 = 5cm lens formula 1/f = 1/v…

Q: 4. Cylindrical rollers of weight 50 N are placed as shown in figure. The reaction at point of…

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Q: Given that the current i₁=5.00 A and i2 = 2.00 A, what will be the value of current that will flow…

A: Given data :- i1 = 5 A i2 = 2 A

Q: What is the total power (W) dissipated in the two resistors in the circuit shown if R1=10ohms,…

A: Given Data : The resistance of resistor R1 is given as R1=10 Ω The resistance of resistor R2 is…

Q: Find the density Mass=3.3 kg Volume=0.001 m3

A: Given - Mass = 3.3 kg Volume = 0.001 m3 = 1 litre

Q: On a winter day, a certain house loses 1.12 x 108 J of heat to the outside. What is the total change…

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Q: 72. What will be the sign convention of the voltage if the direction of the current is opposite to…

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Q: Gauss's Law and Electric Field: A long cylinder carries a charge density that is proportional to the…

A: Given: The charge density of the cylinder is proportional to the distance from the axis. ρ=ks  Here,…

Q: What happens to the energy of a wave if the amplitude of the wave is doubled?

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Q: A beam of light reflects and refracts at point A on the interface between material 1 (n₁ = 1.33) and…

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Q: What is the thermal efficiency for the heat engine ilustrated on the pV diagram below? The gas is…

A: We know from the diagram ,                                            Efficiency…

Q: A man pushes a 47.9 kg crate at an angle of 15 degrees below horizontal. What is the minimum force,…

A: Required : Force required to move.

Q: Find the pressure Force=1.78 N Area=0.33 m2

A: Required : We have to compute pressure with help of force and value of area . Given data : Force=F…

Q: it takes 3.8 x10^-5 s for a pulse of radio waves from a radar to reach a plane and bounce back.How…

A: Motion perpendicular are independent of each other. Motion can be uniform or accelerated. Motion is…

Q: What is the decrease in entropy of 44.8 g of water that condenses on a bathroom mirror at a…

A: We know that∆S=∆QT                   1Here∆S=Change in entropy∆Q=Heat transferT=Temperature∆Q=mLv…

Q: . According to Ohm’s law, what must be greater to maintain the same current in a conductor with more…

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Q: IXFQP A police car traveling 95.0 km/h is traveling west, chasing a motorist traveling at 80.0 km/h.…

A: The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need…

Q: can you write the solutions clearer? thanks

A: Given that Three  vectors A, B and C which make an expression To determined that…

Q: (II) An average active person consumes about 2500 Cal a day. (a) What is this in joules? (b) What is…

A: 4) energy consumed in a day = 2500 Cal

Q: Considering the circuit shown below, determine the magnitude of the current in amperes 3 Ω + a b Μ…

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Q: A 60 cm long straight wire carrying a current of 4.0 A is placed in a 9.8 T magnetic field. The…

A: Given(s): Current through the wire, i=4.0 A. Magnetic filed, B=9.8 T. Length of the wire,L=60…

Q: What is the magnitude and direction of the force on a proton 7 Mm/s traveling horizontally to the…

A: Given value--- speed = 7 Mm/s , east . magnetic field = 0.55 T , upward . We have to find--- What…

Q: Find current Voltahe=12 Volt Resistance 3.4 Ohms

A: Given data :          Voltage = 12 volt           Resistance = 3.4 ohms

Q: Find current Voltahe 12 Volt Resistance 3.4 Ohms

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Q: Which of the following is the equivalent equation of the given loop EBCF? Please refer to the…

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Q: 5. Two protons move parallel to the x-axis in opposite directions at the same speed v=3.0 x 105 m/s.…

A: Given  Speed(v)=3*105 m/s Separation (r)=5.9*10-10 m

Q: Which situation results to the greatest work done? Group of answer choices a 120 W appliance…

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Q: Suppose that a particle moves along a straight line with velocity defined by v(t) = t² – 3t – 18,…

A: Displacement = -90 m

Q: Which of the following can change the pitch of a sound if its value changes? Select all that apply.…

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Q: A water heater with a maximum power output of 650W is used to increase the temperature of water for…

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Q: What is the magnitude and direction of the force on a proton 7 Mm/s traveling horizontally to the…

A: Charge on proton =1.6×10-19C SSpeed of proton =7×106 m/s (I) magnetic field =0.55T (j) θ=900

Q: Find current Voltahe 12 Volt Resistance 3.4 Ohms

A: Given  Voltage (Vs ) = 12 V  Resistance (R) = 3.4 Ω     From Ohm's law , Current ( I ) = Vs/R

Q: You are standing on the sidewalk when a police car using a siren drives toward you and then away…

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Q: In the circuit shown below, R1 = 3 ohms, R2 = 2 ohms, R3 = 5 ohms, 1 = 4 V, 82 = 10 V, and 3 = 6 V.…

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Q: According to Lenz’s law, a decreasing magnetic flux will result to an induced current that produces…

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Q: You observe a clear liquid heated in a stove, after some time. It started to boil completely. What…

A: As the continuous heat is supplied then Temperature of liquid keeps increasing and then it starts…

Q: A trough is full of liquid of weight density 9,000 N/m³. The ends of the trough are equilateral…

A: Option d is the right ans.

Q: A 5.00-cm tall light bulb is placed 55.5 cm from a concave mirror having a focal length of 15.2 cm.…

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Q: Om=2.78 h=31m Find PE g=10m 1s2

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Q: 2. How does the frequency of a wave relate to the energy of the wave? Type your answer here:

A: Consider the energy of the wave is E and the frequency of the wave is f.

Q: 8. A person standing on a 25-m high ledge atop a cliff drops a rock. At the same time, another…

A: height of cliff (ho) = 25 m initial velocity of first rock dropped from top of cliff = 0 m/s initial…