A 600kg hammer of a pile driver is lilted 2m the pilling head. What is the change of potential energy? If the hammer is realest. What will be its velocity and the instant if it sticks the pilling?  a. 10,772 N-m and 5.26m/s  b. 13,200 N-m and 5.26m/s  c. 11,772 N-m and 6.26m/s  d. 11,77 2N-m and5.26m/s ∫PE = mgo(∫Z)/gc

A 600kg hammer of a pile driver is
lilted 2m the pilling head. What is the
change of potential energy? If the
hammer is realest. What will be its
velocity and the instant if it sticks the
pilling?
 a. 10,772 N-m and 5.26m/s
 b. 13,200 N-m and 5.26m/s
 c. 11,772 N-m and 6.26m/s
 d. 11,77 2N-m and5.26m/s
∫PE = mgo(∫Z)/gc
by

1 Answer

Answer :

11,772 N-m and 6.26m/s
by

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Last Answer : Answer : c

Two 12 ft. sections of aluminum siding are placed end to end on the outside wall of house. How large a gap should be left between the pieces to prevent buckling if the temperature can change by 55˚C?  a. 0.21 m  b. 0.18 m  c. 0.31 in  d. 0.18 in

Description : Two 12 ft. sections of aluminum siding are placed end to end on the outside wall of house. How large a gap should be left between the pieces to prevent buckling if the temperature can change by 55˚C?  a. 0.21 m  b. 0.18 m  c. 0.31 in  d. 0.18 in

Last Answer : 0.18 in

How much will the length of a 1.0 km section of concrete highway change if the temperature varies from -15˚C in winter to 41˚C in summer?  a. 0.67 m  b. 2.2 m  c. 3.1 m  d. 0.47 m

Description : How much will the length of a 1.0 km section of concrete highway change if the temperature varies from -15˚C in winter to 41˚C in summer?  a. 0.67 m  b. 2.2 m  c. 3.1 m  d. 0.47 m

Last Answer : 0.67 m

One kg of carbon produces __________ kg of carbon dioxide.  A. 3/7  B. 7/3  C. 11/3  D. 3/11

Description : One kg of carbon produces __________ kg of carbon dioxide.  A. 3/7  B. 7/3  C. 11/3  D. 3/11

Last Answer : Answer: C

One kg of carbon requires 4/3 kg of oxygen and produces __________ kg of carbon monoxide gas.  A. 8/3  B. 11/3  C. 11/7  D. 7/3

Description : One kg of carbon requires 4/3 kg of oxygen and produces __________ kg of carbon monoxide gas.  A. 8/3  B. 11/3  C. 11/7  D. 7/3

Last Answer : Answer: D

One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.  A. All  B. 4/7  C. 11/4  D. 9/7

Description : One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.  A. All  B. 4/7  C. 11/4  D. 9/7

Last Answer : Answer: B