Part A The power expended for a barbell raised 2.0 m in 2 s is O...

Question

Question

Answer 1

Answer #1

Given

Raised 2m in 2 sec

But in question bareball mass is not given

Let us assume mass of bareball =m

Work=mg*2

Power=2mg/2=mg

Answer 2

Similar Homework Help Questions

What power is expended by a weight lifter when lifting a 66 kg barbell a vertical...

What power is expended by a weight lifter when lifting a 66 kg barbell a vertical distance of 1.4 m in a time interval of 2.0 s
Select the equation that will correctly show that nearly 900 W of power is expended when...

Select the equation that will correctly show that nearly 900 W of power is expended when a 600-N barbell is lifted 2.1 m above the floor in 1.4 s. P= w/t = fd/t P=W/t = 2fd/3t P=W/t = fd/t^2 P=W/t = 2fd/t
Part A In the circuit of the figure (Figure 1), how much power is dissipated in...

Part A In the circuit of the figure (Figure 1), how much power is dissipated in the 2.0-92 resistor? Express your answer with the appropriate units. НА Im ? P2.00 = 7.53 W Submit Previous Answers Request Answer * Incorrect; Try Again; 3 attempts remaining Provide Feedback Figure < 1 of 1 1.012 6.0V = 2.0 Ω WWW 4.0 12 6.0 12 WWW

Part A An airplane increases its speed at the average rate of 15 m/s? How much...

Part A An airplane increases its speed at the average rate of 15 m/s? How much time does it take to increase its speed from 100 m's to 160 m's? 0 0.058 5 O 025 s O 175 O 405 Submit Request Answer Provide Feedback Part A Arunner ran the marathon (approximately 42.0 km) in 2 hours and 57 min. What was the average speed of the runner in m/s? O 3.95 m/s O 142 m/s O 124 m/s 14200...
A monochromatic light source with a power output of 69.0 W radiates light of wavelength 780...

A monochromatic light source with a power output of 69.0 W radiates light of wavelength 780 nm uniformly in all directions. Part A Calculate Bmar for the light at a distance of 4.00 m from the source IV AEP O 2 ? Bar = Bmas = Submit Request Answer Part B Calculate Emas for the light at a distance of 4.00 m from the source. FAQ R O 2 ? Emax = v/m V/ Submit Request Answer Provide Feedback
Review Constants Part A Find the power developed by the current source in the circuit(Figure 1)if...

Review Constants Part A Find the power developed by the current source in the circuit(Figure 1)if v = 38.0 V and i = 30 mA. Express your answer to two significant figures and include the appropriate units. P30mA = Value Units Submit Request Answer Figure < 1 of 1 > Part B Find the power developed by the voltage source. Express your answer to two significant figures and include the appropriate units. 8022 w + 2023 CHA MO O ?...

Part A Use the mesh-current method to find the total power developed in the circuit in...

Part A Use the mesh-current method to find the total power developed in the circuit in figure(Figure 1)if i = 20 A. Express your answer with the appropriate units. Figure < 1 of 1 > TI MÅ o 2 ? Pdev = | Value Pdev = W Submit Previous Answers Request Answer X Incorrect; Try Again; 11 attempts remaining 3202 6.5 IN Provide Feedback
Part A What is the strongest acid among the following? O H20 O HCI O H2Se...

Part A What is the strongest acid among the following? O H20 O HCI O H2Se O HF Submit Request Answer Provide Feedback Part A The pH of a 0.045 M KOH solution is Express your answer numerically to two decimal places. VALO t ? BULE Submit Request Answer Provide Feedback Part A Potassium hydrogen phthalate (molar mass = 2042 g/mol) is one of the most commonly used acids for standardizing solutions containing bases. KHP is a monoprotic weak acid...
KAssignment 3 Problem 14.76 Part A The 2-kg smooth collar has a speed of 3 m/s...

KAssignment 3 Problem 14.76 Part A The 2-kg smooth collar has a speed of 3 m/s when it is at 80. The spring has an unstretched lenath of 1 m Determine the maximum distance s the collar travels before it stops momentarily Express your answer to three significant figures and include the appropriate units. he o fes keyboard shortcuts heip 2.18 s = m Previous Answers Request Answer Submit X Incorrect: Try Again; 5 attempts remaining Figure 1 of 1>...

KAssignment 28 Problem 3 Review -Part A A motor attached to a 120 V/60 Hz power...

KAssignment 28 Problem 3 Review -Part A A motor attached to a 120 V/60 Hz power line draws an 8.50 A current. Its average energy dissipation is 820 W What is the power factor? Submit Request Answer Part B What is the rms resistor voltage? ΑΣφ Submit Request Answer Part C Review A motor attached to a 120 V/60 Hz power line Part C draws an 8.50 A current. lts average energy dissipation is 820 W What is the motor's...