A metallic rod rotates about its center at a constant angular speed. If the rod's temperature is increased uniformly, what happens to its speed? A) its speed of rotation increases. B) its speed of rotation decreases. (c) its speed of rotation remains same. D its speed increases because its moment of inertia increases
Q: 2. A positive charge of 10° coulombs (C) experiences a force of 0.95 N when located at a certain poi...
A: Given Charge,Q= 10-8 C Force,F= 0.95 N
Q: A capacitor of 3.23µF has an area of 6.35mm^2. Determine the separation distance between the two pla...
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for yo...
Q: Two measured quantities are (A-10 0.1) and (8-15+0.15) what is the uncertainty in C# C-AB O a 25 Ob....
A: Given data- Two measured quantities are- A=10±0.1 B=15±0.15
Q: 3. A spherical balloon 5.8 m in diameter is filled with gas weighing 5 N/m³. In standard air weighin...
A:
Q: If you go out to look at the night sky tonight from central Iowa, the North Star (aka Polaris) is lo...
A:
Q: 2) You measure a wire's resistance to be 0.0125 Ohms. If you stretch the wire, doubling its length, ...
A: Resistivity depends on nature of material on stretching the wire nature of material will be same so ...
Q: Consider a thin, spherical shell of radius 12.0 cm with a surface charge density of 0.150 mC/m2 dist...
A: Radius of the spherical shell R=12 cm and surface charge density of the shell σ=0.15 mC/m2. We need ...
Q: A concave mirror of focal length 15 cm produces an image that is two times the size of the object. I...
A:
Q: An infinite uniform line charge, p = 2 nC /m, lies alone the x -axis in free space, while point char...
A:
Q: What is the electric flux if an enclosed object has a charge of 61.95 nC? O 7000 Nm^2/C O7 Nm^2/C O ...
A: The charge is Q = 61.95 × 10-9 C
Q: A 50 cm long wire fixed at both ends vibrates with a fundamental frequency fo when the tension T is ...
A: Given Length of wire, L = 50 cm = 0.5 m Fundamental frequency, Fo When tension is T1 = 50 N If t...
Q: 1. A beam of protons, each with charge q = 1.60 x 10-19C, is moving at 4.50 x 105m/s through a unifo...
A:
Q: ich property of a system is related to the average kinetic energy of molecules?
A: Average kinetic energy of a molecule is directly proportional to temperature ...
Q: he earth’s mass is 5.972x1024 kgs and the earth’s radius is 6371 kms, determine the altitude of a bo...
A: Given: M=5.972*1024 kgR=6371 km = 6.371*106 mgh=9.7 m/s2
Q: (a) If half of the weight of a flatbed truck is supported by its two drive wheels, what is the maxim...
A:
Q: he compressor on an air conditioner draws 40.0A when it starts up. If the start-up time is 0.50s, ca...
A: Given Data:- Current drawn by the air conditioner is I=40.0 A Time t=0.50 s Required:- Number of cha...
Q: ay betweer charges wn below: 4m -2 x 10°c +8 x 10°c 35.3 N/C 45.1 N/C 18.2 N/C 22.5 N/C 26.8 N/C
A:
Q: Exercise 1: Dielectric material with constant (k = 7) is inserted between two plates of a capacitor....
A: Given k = 7 Area of plate ,A = 0.75 m2 Charge, Q = 4× 10-10 C The electric displacement without ...
Q: A sanding disk with rotational inertia 2.1x 10-3 kg-m² is attached to an electric drill whose motor ...
A:
Q: The scientist from which the unit of resistance is named after. Full name with proper title.
A: Answer:- Georg Simon Ohm The unit of the electrical resistance, measured with direct current, is t...
Q: Total mechanical energy will remain constant during rigid body motion only if all work is done by co...
A: Given Statement Total mechanical energy will remain constant during rigid body motion only if all w...
Q: If you drive at a constant velocity of 30 m/s for 1.5 hrs, what will be your displacement in meters?...
A:
Q: Consider three vectors A = 15.3i + 1.7j, B = 9.5i + 9.1j, and C = -2.7i - 11.4j. What is the result...
A:
Q: he parallel plates of an air capacitor are separated by 3.25 mm. Each plate carries a charge of 6.50...
A: Given that Distance between plates d = 3.25 mm = 3.25×10-3 m Charge...
Q: One mole of entrapped (a) ideal gas hos a temperature of 35 Degrees Celsius. If the temperature is h...
A: From the ideal gas law we have PV=nRT where P=pressure, V= volume,n= number of moles, R= universal g...
Q: Problem 8: Consider a bowling ball of mass M attached to two ropes. One rope is being pulled horizon...
A:
Q: B The particle shown in the figure is positively charged. The magnitude (in terms of q, B and ) and ...
A:
Q: How to know if the electric field is directly proportional to the electric force?
A:
Q: The figure below shows two tiny charged spheres q1 = -6.22 µC and q2 = -3.19 µC separated by 36.89 c...
A:
Q: rectangular surface of length 3.25 cm and width 5.25 cm lies on the x-z plane at y = 0. What is the ...
A:
Q: Please use the interactive area below to draw the Free Body Diagram for the bowling ball. Add Force ...
A:
Q: produced in beams that are usually focused on a small area, and the beam is defined in terms of powe...
A: ACOUSTIC IMPEDANCE:- We know that the acoustic impedance is the ratio of the acoustic pressure and ...
Q: Two blocks are connected by a cord running over a pulley. Ignore the mass of the cord and pulley and...
A: According to Newton's second law F = ma
Q: Complete the table Current Voltage Resistance Power 0.8 A 20 0.416A 50W 10V 20 30.61 Q 30W
A:
Q: 1. Two point charges are located on the x-axis as shown, a +2 µC charge at x =-5 cm, and a- 2µC char...
A: Electric potential = 14πε0×Qr
Q: Calculate the force on an alpha particle passing a gold atomic nucleus at a distance of 0.00300 A.
A:
Q: The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value. A...
A:
Q: Compute the derivative of the velocity of sound with respect to the absolute temperature [re: eqn 1]...
A:
Q: An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 oC and rejects hea...
A:
Q: A 25.0 kg propeller may be considered to be a 4.5 m long, thin rod, spun about its center. Assuming ...
A:
Q: In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section), ...
A:
Q: If sound travels 262 miles in 5 minutes how far does it travel per minute?
A: Given Distance ,D = 262 miles Time taken ,T = 5 minutes Speed , V = distance travel per minute
Q: A 30.0-g metal ball having net charge Q = 5.50 µC is thrown out of a window horizontally north at a ...
A: Given: Mass of metal ball: 30 g Net charge Q=5.50 μC Initial speed v = 22 m/s height of window h: 1...
Q: B. Study the usage of breadboard in electronics. Given the symbol of resistor as difference (battery...
A: For breadboard Vertical lines has same potential or same connection
Q: nstantaneous velocity, average velocity and final velocity? Define acceleration, force, energy, pote...
A: INSTANTANEOUS VELOCITY:- The instantaneous velocity of the object is defined as the rate of charge ...
Q: inthe Balistic Pendulum experiment (ahown in the figure below), which of the following is the correc...
A:
Q: glass air Incident ray Figure 1 On figure 1 above, a light ray in air (n = 1.0) is incident on thick...
A:
Q: A wave travels from deep water into shallow water. While in deep water, the wave has a speed of 1.9 ...
A: Given data :- In deep water-speed v1 = 1.9 m/swavelength λ1 = 8.8 mIn shallow water-speed v2 = to b...
Q: In the circuit show in the right, the rate at which R1 dissipating electrical energy is 20.0W a.) Fi...
A: In this question we have to find the values of R1 and R2 and the EMF of the battery. Please give pos...
Q: When water is heated from 10°C to 15°C What is the change in temperature
A:
6
Step by step
Solved in 2 steps
- Consider the piston cylinder apparatus shown in Figure P20.81. The bottom of the cylinder contains 2.00 kg of water at just under 100.0c. The cylinder has a radius of r = 7.50 cm. The piston of mass m = 3.00 kg sits on the surface of the water. An electric heater in the cylinder base transfers energy into the water at a rate of 100 W. Assume the cylinder is much taller than shown in the figure, so we dont need to be concerned about the piston reaching the top of the cylinder. (a) Once the water begins boiling, how fast is the piston rising? Model the steam as an ideal gas. (b) After the water has completely turned to steam and the heater continues to transfer energy to the steam at the same rate, how fast is the piston rising?A cylinder with a piston holds 0.50 m3 of oxygen at an absolute pressure of 4.0 atm. The piston is pulled outward, increasing the volume of the gas until the pressure drops to 1.0 atm. If the temperature stays constant, what new volume does the gas occupy? (a) 1.0 m3 (b) 1.5 m3 (c) 2.0 m3 (d) 0.12 m3 (e) 2.5 m3Two cylinders A and B at the same temperature contain the same quantity of the same kind of gas. Cylinder A has three times the volume of cylinder B. What can you conclude about the pressures the gases exert? (a) We can conclude nothing about the pressures. (b) The pressure in A is three times the pressure in B. (c) The pressures must be equal. (d) The pressure in A must be one-third the pressure in B.
- Physics A bottle of mass mb = 0.1 kg and volume V = 0.1 m3 is attached to the bottom of a vertical thin rod of length ` = 1 m and mass mr = 2 kg, that is hinged at the top end. The bottle is full of hydrogen (mH = 1.67 × 10−27 kg) and is at atmospheric pressure and temperature T0 = 20 0C. (e) To what height will the rod/bottle system swing up to? (Hint: Don’t forget about the center of mass of the rod.) Angular velocity is 30 rad/secThe moment of inertia I of a uniform rod rotating around its center point is I = 1/12ml^2 where m is the mass of the rod and l is its length. (A) Derive an expression for the change in the moment of inertia for such a rod, ΔI, that includes the initial moment of inertia I0, the coefficient of linear expansion for the rod material, and a temperature change ΔT. (B) A uniform rod of mass 0.500 kg and length 1.000 m at T = 0 °C rotates around its center in free fall (e.g., floating in a space station) at an angular velocity of exactly 1 radian per second. If it is warmed to 30 °C and = 20 × 10 −6 °C−1, what would its angular velocity be? Use conservation of angular momentum.Consider a 55-cm-long journal bearing that is lubricated with oil whose viscosity is 0.1 kg/m?s at 20°C at the beginning of operation and 0.008 kg/m?s at the anticipated steady operating temperature of 80°C. The diameter of the shaft is 8 cm, and the average gap between the shaft and the journal is 0.08 cm. Determine the torque needed to overcome the bearing friction initially and during steady operation when the shaft is rotated at 1500 rpm.
- An iron block (c = 0.450 J/gºC) is initially at 60.0 ºC. The block is then submerged into 100.0 g of water (c = 4.18 J/gºC) at 25.0 ºC in an insulated container. The final temperature of the iron block and water upon reaching thermal equilibrium is 26.0 ºC. What is the mass of the iron block?The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At 26.6 °C the air gap between the rods is 1.30 x 10-3 m. At what temperature will the gap be closed?A 10-cm-diameter cylindrical shaft rotates inside a 40-cm-long 10.3-cm diameter bearing. The space between the shaft and the bearing is completely filled with oil whose viscosity at anticipated operating temperature is 0.300 N?s/m2. Determine the power required to overcome friction when the shaft rotates at a speed of (a) 600 rpm and (b) 1200 rpm.
- The density of a fixed amount of gas is greatest at: A. SATP B. STP C. 1 bar and 0 degree Celsius D. 1 atm and 25 degree CelsiusTwo bicycle tires are set rolling with the same initial speed of 4.0 m/sm/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 psipsi and goes a distance of 17.2 mm ; the other is at 105 psipsi and goes a distance of 92.9 mm . Assume that the net horizontal force is due to rolling friction only and take the free-fall acceleration to be ggg = 9.8 m/s2m/s2 . What is the coefficient of rolling friction μrμrmu_r for the tire under low pressure?Two bicycle tires are set rolling with the same initial speed of 4.0 m/sm/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 psipsi and goes a distance of 17.2 mm ; the other is at 105 psipsi and goes a distance of 92.9 mm . Assume that the net horizontal force is due to rolling friction only and take the free-fall acceleration to be gg = 9.8 m/s2m/s2 . What is the coefficient of rolling friction μrμr for the second tire (the one inflated to 105 psipsi)?