If 2,637 joules of energy were used in 0.1 second, how many kilowatts of power were used? Your Answer:

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**Problem Statement:**

If 2,637 joules of energy were used in 0.1 second, how many kilowatts of power were used?

**Your Answer:**

[Input field for answer]*

---

**Explanation:**

To solve this problem, calculate power using the formula:

\[ \text{Power} (P) = \frac{\text{Energy} (E)}{\text{Time} (t)} \]

Given:
- Energy (E) = 2,637 joules
- Time (t) = 0.1 seconds

Calculate the power in watts first:

\[ P = \frac{2,637 \, \text{joules}}{0.1 \, \text{seconds}} = 26,370 \, \text{watts} \]

Convert watts to kilowatts:

\[ 1 \, \text{kilowatt} = 1,000 \, \text{watts} \]

\[ \text{Power in kilowatts} = \frac{26,370 \, \text{watts}}{1,000} = 26.37 \, \text{kilowatts} \]

Therefore, the power used is 26.37 kilowatts.
Transcribed Image Text:**Problem Statement:** If 2,637 joules of energy were used in 0.1 second, how many kilowatts of power were used? **Your Answer:** [Input field for answer]* --- **Explanation:** To solve this problem, calculate power using the formula: \[ \text{Power} (P) = \frac{\text{Energy} (E)}{\text{Time} (t)} \] Given: - Energy (E) = 2,637 joules - Time (t) = 0.1 seconds Calculate the power in watts first: \[ P = \frac{2,637 \, \text{joules}}{0.1 \, \text{seconds}} = 26,370 \, \text{watts} \] Convert watts to kilowatts: \[ 1 \, \text{kilowatt} = 1,000 \, \text{watts} \] \[ \text{Power in kilowatts} = \frac{26,370 \, \text{watts}}{1,000} = 26.37 \, \text{kilowatts} \] Therefore, the power used is 26.37 kilowatts.
A 164 kg mass is lifted 1.8 m. What is the potential energy of the mass (in J)?

Your Answer: _________

(Note: To find the potential energy, use the formula \( PE = m \times g \times h \), where \( m \) is the mass in kilograms, \( g \) is the acceleration due to gravity (approximately \( 9.81 \, \text{m/s}^2 \)), and \( h \) is the height in meters.)
Transcribed Image Text:A 164 kg mass is lifted 1.8 m. What is the potential energy of the mass (in J)? Your Answer: _________ (Note: To find the potential energy, use the formula \( PE = m \times g \times h \), where \( m \) is the mass in kilograms, \( g \) is the acceleration due to gravity (approximately \( 9.81 \, \text{m/s}^2 \)), and \( h \) is the height in meters.)
Expert Solution
Step 1

Given data: 

Energy (E) = 2637 J

Time (t)= 0.1 s

Required:

Power (P) in kW

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