What temperature, in ∘C , is a blackbody whose emission spectrum peaks at 2.90 μm ?

Q: An object is dropped from the top of a cliff 600 meters high. Its height above the ground t seconds…

A: Height

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A: Newton's second law of motion states that the acceleration of an object is directly proportional to…

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A:

Q: 2.24 Calculate the exergy efficiency of an electrical heater which heats air to a temperature 100 °C…

A: Efficiency of the electrical heater.

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A: AD=1 mWe know, acceleration along the ramp is :

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A: Here The magnitude of applied force = F = 400Nangle below the hoizontal = 20o we have to calculate…

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Q: The figure shows the path of the negatively charged particle 1 through a rectangular region of…

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Q: Problem 2 Two masses m₁ = 15 kg and m2 = 25 kg are pushed along a frictionless horizontal surface by…

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Q: The diagram shows how apples are processed for market. Although the second conveyor belt is shorter,…

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Q: A 25 kg object that has a coefficient of friction 0.3, is sitting on a level surface and you push on…

A: Mass of object m = 25 kg Coefficient of friction u = 0.3 Force applied on object = 40 N

Q: a. What is the spring constant? b. If the spring will be stretched further, determine the amount of…

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Q: A constant force of 398 N acts on a spacecraft of mass 7830 kg that has an initial velocity of 32…

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Q: Find the angle between the vectors a = 2i + 3j + 5k and b=i-2j + 3k.

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Q: after the tension in a string is tripled the speed of waves on the string is 12 m/s. what was the…

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Q: ww O-1.7 A O.3.1 A O 0.63 A O-1.4 A Mi R₁ 10.0 V A + E The ammeter shown in the figure reads 4.4 A,…

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Q: A 50 kg crate is being pulled to the right with a velocity of 5 m/s on a horizontal floor for 75 s…

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Q: A baseball is hit with a speed of 26 m/s at an angle of 45.0°. It lands on the flat roof of a…

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Q: A jogger maintains a speed of 2.9 m/s for 180 m until he encounters a stoplight, and he abruptly…

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Q: Let's revisit the practice problem. Two blocks are connected by a rope passing over a frictionless…

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Q: The cord from an appliance is too short to reach the wall outlet in your room. You have two…

A: for first extensionThe resistance of the wire is 0.0780 Ω.The current is 7.6 A.for second…

Q: A golf ball with an initial speed of 58.0 m/s lands exactly 140 m downrange on a level course. (a)…

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Q: A car of mass 500.0 kg has an initial velocity of 10.0 m/s. This car is about to perform a stunt for…

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Q: During a football game Aiden kicks a ball from the ground at the 30-yard line. He gives the ball an…

A: Initial speed of ball is The launch angle is Length of yard line is Note:Find:(a) After one second…

Q: You are an observer on the ground. (a) Draw two motion diagrams representing the motions of two…

A: Motion diagrams are drawn using the arrow and dots. The dots are marked as equal intervals of time.…

Q: A 15.5 mC charge is fixed at the origin in the xy plane, and a -22.2 mC charge is fixed at (x,y) =…

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Q: Three 100 resistors are connected as shown in the figure. The maximum power that can safely be…

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Q: Where should fisherman Pete aim his laser gun?

A: Man will see the fish slightly above due to refraction so men need to aim the bow and arrow below…

Q: The figure shows a plastic ring of radius R = 50.1 cm. Two small charged beads are on the ring: Bead…

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Q: When drawing equal potential lines in a parallel plate, can you draw a straight line with arrows ?

A: When visualizing the electric field and potential in a parallel plate capacitor, it's essential to…

Q: A ball is thrown horizontally with an initial velocity of 67 m/s at a height of 76 m. a) How long…

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Q: 11. A stroboscope is a light that flashes on and off at a constant rate. It can be used to…

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Q: Charge is distributed uniformly throughout the volume of an infinitely long cylinder of radius R =…

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Q: A van had a small light in the ceiling of the cargo bay. When the van is accelerating east at a rate…

A: Newton's second law of motion states that the acceleration of an object is directly proportional to…

Q: We place a point charge q at the center of a sphere of radius R. This results in   an electric…

A:

Q: The force P=143 N. Determine the magnitude of the steady-state spring compression 6, which is…

A: And

Q: Certain heavy industrial equipment uses AC power that has a peak voltage of 512 V. What is the rms…

A: Peak voltage, Vo = 512 V

Q: In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that…

A: The rate of the pulse delivered is = 81 times/min The resistance is R = 1.7 x 106 ohmsThe capacitor…

Q: 14. A bicycle wheel is rotating at 50 rpm when the cyclist begins to pedal harder, giving the wheel…

A: Given(s):Initial angular velocity, Angular acceleration, Time, t=10 s

Q: You are an observer on the ground. (a) Draw two motion diagrams representing the motions of two…

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Q: A Hall-effect probe operates with a 120 -mA current. When the probe is placed in a uniform magnetic…

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Q: A stationary police officer directs an ultrasonic pulse of frequency 22 800 Hz at an approaching…

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Q: Suppose the Universe is dominated by a strange substance with an equation of state w = -0.7. This…

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Q: Two resistors are connected in series in a circuit with a battery. The electromotive force (emf) of…

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Q: Reality Optics Problem: Mirrors are probably the simplest optical components, however, high-quality…

A: Finding specific product listings and their prices may not be possible without access to real-time…

Q: For each of the position-time graphs below, draw the corresponding velocity-time graph. Explain how…

A: Velocity is the slope of the position time graph

Q: An electron is traveling at 5×105 m/s when it is 3 nm away from a proton. What is the speed of the…

A: Speed of electron=5x105 m/sDistance between electron and proton=3 nm

Q: Equal masses of ice at 0°C and water at 100°C are mixed in an insulated container. Estimate the…

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Q: An airplane pilot sets a compass course due west and maintains an airspeed of 218 km/h . After…

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Q: 5. Three point-like charges are placed at the corners of a rectangle as shown in the figure, a =…

A: System of three charges

Blackbody

Q.5 A blackbody radiates how much energy when the temperature of the body is elevated?