A figure skater with her arms outstretched has a moment of inertia of 4.08 kg-m2. When she brings her arms in to her chest, her moment of inertia drops to 2.53 kg-m2. If she spins at a rate of 64.2 rpm with her arms outstretched, calculate her new rotation rate (in rpm) when she brings her arms in.

Q: Consider that a patrol is moving with a velocity of 80 m / s towards a wall that is to the right, if...

A: The velocity of the patrol v=80 m/s. The frequency of the patrol siren fA=300 Hz. The speed of the s...

Q: Activity A.2. Blow it up 2 a. Prepare a piece of cardboard (used carton can be used as substitute in...

A: The cardboard will blow or not depends a lot on the following factors: The thickness of cardboard T...

Q: pLease help me for the question in the image

A: draw the graph of signal x(t) , t in y axis  Now, draw the graph of derivative g(t), t on y axis  

Q: A right triangular wedge is placed on the ground in a charge-free region of space, and in the presen...

A:

Q: What conditions had to hold for the first neutral atoms to form? At what time did this occur? Is the...

A: An atom that has the same number of proton and electron is called a neutral atom. Between about 10-1...

Q: Problem (2): A conductor square loop with a side length a in the xy-plane, where one of the loop cor...

A:

Q: A rack of seven spherical bolwing balls (each 6.80 kg, radius of 9.70 cm) is positioned along a line...

A: Solution:   Given Values, Mass of bowling balls(m2)=6.80 Kg Mass of ping-pong ballm1=2.70×10-3 Kg Th...

Q: A led TV power adaptor has a 2-ma output and resistance of 900 ohms. What is the voltage output of t...

A: Given output current of the adaptor (I)= 2-ma= 0.002 ampere output resistance (R)= 900 ohms 

Q: By visual inspection, order the PV diagrams shown in the figure below from the most negative work do...

A: Figure a:-The volume of the system increases in figure a, the work done on the system is negative an...

Q: A physics student (90 kg) on skis is pulled horizontally across the dry snow with a rope. If there i...

A: According to Newtons second law, F=ma                        (I)           m=mass,a=acceleration

Q: 428 Suppose you have the field H =rcos 0 consider the cone specified by 0 = 1/4, with a height a as ...

A: stoke theorem is, ∮H·dl =∬(∇×H)·ds a) right side of stoke theorem is,     ∬(∇×H)·ds lets first calcu...

Q: 2 - 2500 cos 20 13. For a short time, the jet plane moves along a path in the shape of a lemniscate,...

A: Given: The jet plane moves along a path in the shape of a lemniscate, r2=(25cos2θ) km2 At instant θ...

Q: Question in attachments

A: Concept used: Photons are scattered at different angles when hit through an aluminum foil. This can ...

Q: A spherical shell is constructed in three non-conducting layers. The fir 2a has an inner radius A, a...

A: total charge that can be enclosed within the volume of the 1st layer is,  (NB: Since we answer only ...

Q: What are the Concept of Centrifugal Compressor in natural gas ?

A: Answer:   Introduction: The Concept of Centrifugal Compressor in natural gas is introduced and discu...

Q: The Philippine Navy bought the latest 2300-tonned Kilo-Class Attack Submarine from Russia through th...

A: Weight of the Kilo-Class Submarine is given as, W = 2300 tons Gauge pressure value is given as, Pg =...

Q: A coil is connected in series with a 9.39 kΩ resistor. An ideal 57.2 V battery is applied across the...

A: Using LR circuit formula,

Q: The following 1⁄4 W resistors are in series: 1.2 kΩ, 2.2 kΩ, 3.9 kΩ and 5.6 kΩ What is the maximum v...

A: In the series resistors, the current through each resistor will be the same. Since the power dissipa...

Q: A 300 g aluminum pot containing 0.50 L of water is placed on the 1 kg iron hot plate on an electric ...

A:

Q: Determine the magnitude of the projection of F2 in thedirection of F1 .a. 40.0kN b. 29.3kNc. 25.3kN ...

A: Given And force F2 is directed along  OA. Since 

Q: a Whot is the rodume ļloww rote of the auoter through the nozzle Cin m3/s)l when the diameter Îs 2-2...

A: Hey, since there is multiple subpart question posted, we will answer first three questions. If you w...

Q: Solid spheres have a rotational inertia about an axis through their center of mass given by I = 2/5 ...

A: Using parallel axis theorem, moment of inertia about the given axis I=Icm+Md2=25MR2+Md2=M2R25+d2=ρ4π...

Q: The force F has a magnitude of 420 N. Express F as a vector in terms of the unit vectors i and j. Id...

A:

Q: A horizontal spring with spring constant 290 N/m is compressed by 15 cm and then used to launch a 30...

A: The spring constant k=290 N/m×1 kg/s21 N/m=290 kg/s2. The compressed horizontal distance x=15 cm×10-...

Q: Problem 2: An ideal transformer is rated at 2400/120 V, 9.6 kVA, and has 50 turns on the secondary s...

A: Given: V1V2=2400120 kVA rating=9.6 kVA N2=50 turns  

Q: Complete Analysis of a Refrigerator Goal Solve for the performance coefficient of a refrigerator usi...

A: Given Ta = 300 kPa = 100000 Pan    = 10  

Q: 94 In Fig. 1, the four particles are fixed in place with charges of q=+6e, q2=-5e, q3=q4=8e separate...

A: Electric field at point P E→=E→1+E→2+E→3+E→4=kq1i^d2+kq2i^d2-kq3j^d2-kq4j^d2=kd26e+5ei^-8e+8ej^=ked2...

Q: Pulsars are astronomical objects that give off very regular pulses of radio waves with periods rough...

A: Initial angular speed ω=ω0+αtω0=ω-αt

Q: Consider two hockey pucks, each with mass 1.25 kg, on frictionless ice. Puck A is initially moving d...

A: Given, Two hockey pucks have equal mass and they collide 

Q: A 5-cm thick slice of bread (k = 0.23 W/m°C) is placed on top of a hot plate at a temperature of 85o...

A: Thermal Conductivity The thermal conductivity of a substance is the measure of the ability of the su...

Q: A 1800 kg cart on an amusement park ride is set into motion by compressing a spring with a constant ...

A: Given Mass of cart (m)               = 1800 kg Spring constant (K)           = 1.5×105 N/m Radius of...

Q: Question in the AttachmentsThere are two parts.

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question s...

Q: A square wire loop with 2.4 m sides is perpendicular to a uniform magnetic field, with half the area...

A: Using the electromagnetic induction,

Q: if the particle has the wavelenght si =a*x^2 between x = 0 and si =0 elsewhere. find the probability...

A:

Q: Two steel blocks glide without friction on a surface horizontal with the speeds shown in the figure....

A: Using the conservation of momentum,

Q: A string is attached to the blade at one end, passes over a fixed pulley and is attached to a hangin...

A: The block of mass M suspended from the pulley exerts a force of tension on the string. This force of...

Q: Please send the answer by typing only. I don't want handwritten.  The subject is ( Electronic Circui...

A: Introduction : A field-effect transistor or FET is a transistor, where the output current is control...

Q: Advanced Physics Question

A: (a) Volume flow rate Q=Vt=0.12 m31.6 min1 min60 s=1.25×10-3 m3/s≈1.3×10-3 m3/s

Q: The velocity of a 3.0-kg object is shown at two times. What was the magnitude of the average force e...

A:

Q: Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 85 steps per minut...

A: Given that,Total time spent, (T)= 30 mins =1800 secMass of Person (M) =150 lb=68.038 kgHeight of eac...

Q: Two discs sliding on a horizontal plane without friction with opposite speeds of the same magnitude ...

A:

Q: Hello, is the wrong formula △E×△t=h/2π being used here: https://www.bartleby.com/questions-and-answe...

A: Energy-Time uncertainty principle is given by, ∆E∆t≥ℏ2

Q: You find an abandoned car in a Walmart parking lot. The car is locked.  You look up the car on Kelly...

A:

Q: K:30)

A:

Q: Suppose you use an ideal pulley of the type shown in Figure 5.18(a) to support a car engine of mass ...

A: Given: Car engine of mass 110Kg See figure(a) To find; (a) Tension in the rope (b) The force applied...