D Question 4 True or False? There are just as many planets in the universe as there are stars. If the answer is false explain why it is false. That is to say, what would make the statement true.

Q: 12. Calculate the center of mass of a 4 m long aluminum bar with cross-sectional area of 4 cm x 4 cm…

A: Given Data:  It is given that the length of the uniform bar is, L=4 m.  Axis of rotation is located…

Q: Two horses are pulling a barge with a mass 4000 kg along a canal, as shown in Figure 4.8 in the…

A:

Q: B A coin sits on a rotating turntable as shown in the figure. At the time shown in the figure, which…

A: We need to say what the direction of friction will be on the coin on turntable.

Q: Two objects having different masses are subjected to Identical forces act for the same length of…

A: It is given that two objects having same masses are subjected to identical forces for same length of…

Q: 9&10 please! Thank you!

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 01a. A 72 N force is applied to a 11 kg box on rough level ground. The coefficient of friction…

A: A free-body diagram for a body under the influence of external forces is the situation where this…

Q: In the following diagram, the current passing through 20 Ohm is 1.5 A. 19. What is the current…

A:

Q: Mickey, a daredevil mouse of mass 0.0189 kg, is attempting to become the world's first "mouse…

A: Given: In this question, the given details are, Mickey, a daredevil mouse of mass 0.0189 kg, is…

Q: -ncave lens has a focal length of -3 cm. y from the lens. Find the magnification tive answer and an…

A: Focal length of  concave lens                                                   f  = - 3 cm height…

Q: N vs. TIME graph below, click on the spot where the VELOCITY IS ZERO (the arrow will be placed where…

A: Introduction: When the body does not gets displaced with time, the velocity is said to be zero. So,…

Q: If a candle is 3 meters from a thin lens with a focal length of 2 m, find the image distance A) 2 m…

A:

Q: An infinitely long wire is uniformly charged. The voltage difference from r 2 m and r= 4 m is 30…

A: Given:    An infinitely long wire --- uniformly charged.    Voltage difference (ΔV) (between r1 = 4m…

Q: hown in the figure below, two long parallel wires (1 and 2) carry currents of I, = 2.86 A and I, =…

A: calculate the net magnetic field at point and find direction as per shown.

Q: The block in the drawing has dimensions LO×2L0×3L0.where Lo =0.3 m. The block has a thermal…

A: Give Thermal conductivity = 100j/s-mC  Delta T = 21- 12 ° C = 9 ° c

Q: 5.00 m 3.20 m 2.00 m Figure P8.3 3. A block of mass m = 5.00 kg is released from point @ and V…

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Q: A conducting bar of length 0.25 m and mass of 0.34 kg is pulled to the right with a Force of 3.0 N.…

A: Write a given values of this question. L=0.25mm=0.34kgF=3.0NB=0.750TR=50Ω

Q: Light bulb 1 operates with a filament temperature of 2500 K, whereas light bulb 2 has a filament…

A: T1=2500k. T2=1900k.

Q: 6&7 please

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Q: 5) Let's use this expression to solve a problem. Star X and Star Y are intrinsically identical…

A: Given, star X is located 20 light-years from earth star Y is located 40 light-years  from earth…

Q: 3. We will repeat the previous problem using energy arguments. Comment: Mechanical energy is…

A: The given yo-yo is made up of two solid disks, each of mass M, so the total mass of the yo-yo is 2M.…

Q: 7. "The wider the road, the more cars can pass through". Which of the following factors affecting…

A: We need to tell which factor affecting the resistance fits the given analogy.

Q: What is the height of mercury level in a barometer which is set up in a sealed cabin on the moon…

A:

Q: wave paths to a distant screen are shown, leaving the slits at angle ₁. (The screen is so far away…

A: The wavelength of light is 624 nm.  (1) Every semi circle wavelet represents a wave front. Wave 1…

Q: In a video clip, a man is bound by chains and is hanging from the top and rotating on the chain. In…

A: Scenario: A man is hanging from the top and bounded by a chain such that man is rotating on the…

Q: The Apollo 8 mission in 1968 included a circular orbit at an altitude of 111 km above the Moon's…

A: Mass of spacecraft m = 15000 kg Moon's mass M = 7.35 × 1022 kg Moon's radius R = 1738 km = 1.738 ×…

Q: The period of oscillation of a block of unknown mass hung from a spring is 1.8 s. A. What would be…

A: Given data: Here are the given data, Time Period of oscillation of a block=1.8s Mass=4 times of the…

Q: A convex lens has a focal length of 17 cm. A candle with a height of 4 cm is 10 cm

A: Focal length of convex lens is f=17 cm Height of object is ho=4 cm Object distance is u=10 cm…