A car is traveling at a speed of 42.6 m/s on an interstate highway where the speed limit is 75.0 mi/h. Is the driver exceeding the speed limit? O Yes O No Justify your answer.

Q: Required information Two wooden crates with masses as shown are tied together by a horizontal cord. ...

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Q: An object has an instantaneous acceleration of a(t) =(t^2) m/s^2. At t=3 s, find it's position.

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Q: A 1.0-kg object moving 9.0 m/s collides object moving 6.0 m/s in a direction that is perpendicular t...

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Q: Two cannonballs are dropped from a second floor physics lab at height h above the ground. Ball A has...

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Q: Find the electric field of the charge particle q = 2 C at a distance of 10 cm. O 1.8 x 10^15 N/C 1.8...

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Q: Electric charge is uniformly distributed inside a nonconducting sphere of radius . The electric fiel...

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Q: A freezer sustains a cold environment of -26°C and exhausts its heat at 35°C. Assuming a Carnot cyc...

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Q: much heat is required to change 10 g of ice?  at 0 °C to water whose temperature is 20 °C!

A: Given  Mass m = 10 g = 10 ×10-3 kg  Latent heat of fusion L = 33600 J/0 C   Specific heat of water =...

Q: What is the magnitude of the drag force if the wind reduces the ball's travel distance by 10 %?

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Q: Illinois Jones is being pulled from a snake pit with a rope that breaks if the tension in it exceeds...

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Q: A bridge is made with segments of concrete 50 m long. If the linear ekpansion coefficient is 12 x 10...

A: Answer:-  Given  Coefficient of linear expansion (alpha) = 12 × 10-6(oc)-1 = 0.0000012  Original len...

Q: Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. The electri...

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Q: Consider a pulse incident on the free end of a spring as chown. Note that the leading edge of the pu...

A: Given Information: The wave pulse: We can see the leading pulse is 2 squares wide and the trailing ...

Q: 5) The figure shows a graph of the position x of two cars, C and D, as a function of time t. x (m) t...

A: While studying the graph of position vs time, a straight line shows constant velocity motion.   

Q: A ball is dropped from a building, after 2 seconds another ball was thrown downward. After 60 second...

A: Given that:- Ball1 is dropped from a building at t=0sec, After 2 sec ball 2 is thrown vertically dow...

Q: t is interesting to note that there is a big difference in size between the space craft required to ...

A: In this question we have to explain the size difference between the space craft which leaves Earth a...

Q: Problem 10 There is a 5 kg lump of clay traveling west at a constant 12 m/s. There is also a 2.0 kg ...

A:  lump moving towards west  m1 = 5 kg u1 = 12 m/s Lump moviing towards North m2 = 2 kg u2 = 5 m/s ...

Q: Problem 8 A 1D perfectly inelastic collision occurs between two masses m and M. If the mass m is ini...

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Q: A uniform electric field exists in a region between two itely charged plates. An electron is release...

A: Force on charged particle in electric field  F = qE  ma = qE  a=qE/m

Q: If the reflectivity coefficient of the laser mirrors is (0.999 & 0.95) and the sum of the losses for...

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Q: A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the bl...

A: According to question we need to find--- Determine the power consumed by (a) the blow-dryer and (b)...

Q: A person rides a Ferris wheel that turns with constant angular velocity. Her weight is 544.0 N. At t...

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Q: A metal is heated up to a temperature of 500 degrees. It is then exposed to a temperature of 38 degr...

A: According to Newton's law of cooling:- T=T0+(Ti-T0)e-kt where, T=Temp. at any time 't'.T0=Surroundin...

Q: Find acceleration

A: Given data : Initial velocity=U Final velocity=V Time=t   Required : Acceleration

Q: Q2: Determine the magnitude and direction of the friction force which the inclined plane exerts on t...

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Q: Problem3 A. Consider the circuit shown below Rank the brightness of the bulbs. Use the symbols , and...

A: Given that:- Resistance of each bulb=2 ohm

Q: v (m/s) 6. 26 v = 4t – 6 14 v = 3.5t t (s) 4 5 8

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Q: Part A In proton beam therapy, a beam of high-energy protons is used to kill cancerous cells in a tu...

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Q: 2. An object has the following 5 velocities( m/s) in the x-y plane. In which one of the four cases, ...

A: Given   there are 5 velocity ,and  the velocity for constant instatenous Acceleration is ,???

Q: Suppose a speck of dust in an electrostatic precipitator has 9.1000x1011 protons in it and has a net...

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Q: _He:Ne laser operated in threshold condition. Reflection coefficients of the mirrors are: 0.999 and ...

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Q: •38 In Fig. 25-29, a potential difference V = 100 V is applied across a capacitor arrangement with c...

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Q: What are the indices for the two planes drawn in the sketch below? Construct +2 Plane 1 Plane 2

A: We have givenA figure The indices of plane are as

Q: A helicopter needs to travel a displacement of 182 km at 17.0 degrees W of N relative to the ground ...

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Q: 5. The linear attenuation of the intensity of incident radiation on a material is affected by kind o...

A: Part 1 We know I =Io e-μx μ = attenuation coefficient x= thickness Attenuation  of intensity depend ...

Q: There is a spring with a spring constant 3780 N/m.  Answer the following: How far in centimeters, w...

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Q: (a) How far did he travel? (b) What was his average speed? 12 75 (c) What was his displacement?73.87...

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Q: Q3. A football team's kicker punts the ball (mass = 0.4 kg) and gives it a launch speed of 30 m/s. F...

A: Given data:  Mass (m) = 0.4 kg Initial velocity (Vi) = 0 m/s Final velocity (Vf) = 30 m/s Time inter...

Q: Four charges form an isosceles trapezoid: Q1 = +2C is located at vertex X; Q2 = -3C is located at ve...

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Q: An RC circuit with one resistor and one capacitor has a time constant of 1.5 seconds when the resist...

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Q: Determine the distance traveled (m) at t=180s in the graph below. Round off your answer to the neare...

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Q: A gun fires a bullet vertically into a 1.40-kg block of wood at rest on a thin horizontal sheet, Fig...

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Q: 100 g of ice at 0 °C are mixed with 200 g of water at 50 °C.  If the final temperature of the mixtur...

A: Given: The mass of the ice is 100 g. The initial temperature of the ice is 0oC. The mass of the wate...

Q: ball is dropped from a cliff. The height of the cliff is 180 meters. At what speed does the ball hit...

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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: The average pressure hydrostatic force, Fa, acting on the surface of a submerged object acts on a lo...

A: Given The average pressure hydrostatic force,Fa, acting on the surface of a submerged object   Conce...

Q: A student drops a pebble from the edge of a vertical cliff. The pebble hits the ground 4 s after it ...

A: Given: The initial speed of the pebble is 0 m/s. The time taken by the object to reach the ground is...

Q: A square coil and a rectangular coil are each made from the same length of wire. Each contains a sin...

A: The square coil and rectangular coil are made of the same length of wire.  The long side of the rect...

Q: A car accelerates from rest at 7.55 m/s2 for 4.25 s. Determine the final velocity of the car.

A: Given: The initial velocity of the object is 0 m/s. The acceleration of the object is 7.55 m/s2. The...

Scalars and Vectors

Scalars and Vectors are the classification of physical quantities that are used to denote various terms in physics.